William T. Ferris III first joined the Suffolk County District Attorney’s Office as an Assistant District Attorney in 1976, where he prosecuted homicide, rape, vehicular homicide and high-profile corruption cases. He went on to serve as Chief of the Rackets Bureau, Major Crime Bureau, and Training and Education Bureau before leaving the office in 2002 to go into private practice. He returned to the Office on January 1, 2018 as Chief Assistant.

Upon leaving the District Attorney’s office in 2002, Mr. Ferris joined Bracken Margolin Besunder LLP, practicing criminal law in state and federal courts, Surrogate’s Court and Article 81 Guardianships.

He also previously served as Dean of the Suffolk Academy of Law; President of the Suffolk County Bar Association; a member of the Board of Directors for the Suffolk County Criminal Bar Association; a member of the Grievance Committee, Tenth Judicial District; and a member of the Felony Screening Committee, Assigned Counsel Defender Plan.

Mr. Ferris has lectured and conducted training for the National District Attorney’s Association, the New York Prosecutors Training Institute, the National Advocacy Center, and the District Attorneys Association of the State of New York. He has also argued cases in the Appellate Division, the Second Department and the New York State Court of Appeals.

Throughout his career as an attorney, Mr. Ferris has received many awards, including the Suffolk County Bar Association’s Outstanding Leadership Award and the President’s Award as Chair of the 18-b Task Force.

Mr. Ferris is also a proud veteran. He was commissioned an Ensign in the U.S. Navy in 1968. He volunteered to be assigned as an Officer-in Charge of Swift Boats (PCF) in the Vietnam War and later served a tour of duty on the USS HOEL (DDG-13). He transferred to the Naval Reserve upon his release from active duty, serving two separate tours as a Commanding Officer of Naval Reserve Units, and retired as a Captain in 1996.

He is a graduate of Hobart College and received his Juris Doctor from the Fordham University School of Law.

Justin S. Meyers was named Chief of Staff for the Office by District Attorney Sini in January 2018. As Chief of Staff, Mr. Meyers manages executive functions of the Office, including office administration and human resources, the budget, internal and external communications, strategic direction, policy initiatives, community outreach, diversion programs, and special projects for the District Attorney.

Mr. Meyers previously served as Assistant Police Commissioner for the Suffolk County Police Department, the 11th largest police department in the country, where he oversaw strategic communications and public information.

Prior to his career in law enforcement, Mr. Meyers served as an Assistant Deputy County Executive under the administration of Suffolk County Executive Steve Bellone and served as the Director of Operations and Communications as well as Deputy Reciever of Taxes for the Town of North Hempstead.

Meyers received his master’s degree in Strategic Communications from Columbia University and received his bachelor's degree from Hofstra University with a dual major in Political Science and History.

Howard S. Master serves as Special Counsel to Suffolk County District Attorney Timothy D. Sini and Division Chief responsible for prosecution of public corruption offenses and complex financial crimes. Mr. Master assisted District Attorney Sini in creating and overseeing a Conviction Integrity Bureau that will evaluate claims of wrongful conviction based on alleged governmental misconduct or other causes.

Previously, Mr. Master served as Senior Enforcement Counsel to the New York State Attorney General and as Deputy Chief of the Criminal Division in the U.S. Attorney’s Office for the Southern District of New York. Over the course of his career, Mr. Master has prosecuted numerous public corruption offenses, including crimes by elected officials and government contractors, as well as complex schemes involving fraud, money laundering, and corporate misconduct.

Mr. Master has received several awards for his work as a prosecutor, including the Department of Justice’s Director’s Award for Superior Performance and the Federal Law Enforcement Foundation’s Prosecutor of the Year award.

Before becoming a prosecutor, Mr. Master clerked for the Honorable Victor Marrero of the United States District Court for the Southern District of New York and the Honorable José A. Cabranes of the United States Court of Appeals for the Second Circuit. He is currently an adjunct professor at University of Pennsylvania Law School. Mr. Master is a 2003 magna cum laude graduate of the NYU School of Law.

Megan O’Donnell serves on the Executive Team as the Division Chief of Criminal Investigations. Ms. O’Donnell is a seasoned attorney with over twenty years of experience. She began her career in this Office in 1998 as a prosecutor, serving as a trial attorney throughout various bureaus where she prosecuted a gamut of crimes, including sexual assaults, gang violence, major narcotics offenses, and homicides.

In 2010 Ms. O’Donnell was named Attorney-In-Charge of the Anti-Gang Unit, and shortly thereafter Deputy Bureau Chief of the Special Investigations Bureau, which is comprised of a number of specialized units to combat gangs, organized crime, and human trafficking.

Ms. O'Donnell is recognized within both law enforcement and the legal community as a dynamic, ethical, and dedicated attorney, and was given the distinguished honor of being named 2010 Prosecutor of the Year in Trial Advocacy by the New York Prosecutors Training Institute.

In 2013 Ms. O’Donnell left the District Attorney’s Office, to litigate cases in Federal Court as an Assistant County Attorney for the County of Suffolk. As a federal litigant, Ms. O’Donnell once again handled a breadth of cases including employment discrimination and constitutional claims brought against the County.

In 2018, Ms. O’Donnell returned to the District Attorney’s Office as Division Chief of Special Investigations. She currently oversees the Narcotics Bureau which includes the Special Narcotics Unit, Asset Forfeiture Bureau, and the Enhanced Prosecution Bureau which is comprised of three investigative units including the Gang Unit, Crime Strategies and Major Investigations Unit, and the Electronic Surveillance Unit.

Ms. O’Donnell strives to continuously implement investigative strategies for all the bureaus, and utilize the assistance of the vast law enforcement agencies available to this Office.

In January of 2018, District Attorney Timothy D. Sini appointed Tad Scharfenberg Trial Division Chief. As Division Chief, Tad oversees the Homicide, Major Crime, Child Abuse & Domestic Violence, East End, Vehicular Crime, Case Advisory, and District Court Bureaus.

In 1989, Mr. Scharfenberg was hired by the Suffolk County District Attorney Patrick Henry as an Assistant District Attorney. For more than six years as an Assistant District Attorney, he prosecuted and tried cases for the District Court, East End, Family Crime and White Collar Crime/Complex Litigation Bureaus.

At the time of his departure from the Office in 1996, he was a trial supervisor in the District Court Bureau. That same year he also was the recipient of the Suffolk County District Attorney’s Excellence in Prosecution Award.

For the next 22 years, he ran a successful private law practice exclusively handling criminal defense matters. During this time, Mr. Scharfenberg was appointed numerous times as a Special District Attorney.

Mr. Scharfenberg also previously served as President of the Suffolk County Criminal Bar Association.

Mr. Scharfenberg is a lifelong resident of Suffolk County. He received his Bachelor of Arts in Political Science from Hofstra University and his Juris Doctorate from St. John’s University School of Law.

Patricia Theodorou was hired as the Deputy Division Chief of the Trial Division in January of 2020. In this capacity, Ms. Theodorou assists the Trial Division Chief in overseeing several Bureaus, including Homicide, Major Crime, Child Abuse and Domestic Violence, and the East End Bureau.

After graduating law school in 1993, Ms. Theodorou was a defense attorney for the firm of McNeil and Gilbert, in Jacksonville, North Carolina, while her husband was on active duty in the Marine Corps and stationed at Camp LeJeune. In 1996, the native New Yorker and her family returned to New York where she was hired as a prosecutor in the Queens County District Attorney’s Office.

She remained at the Queens District Attorney’s Office until 2006. At that time, Ms. Theodorou briefly worked in the Trial Division at the Nassau County District Attorney’s Office before returning to the Queens District Attorney’s Office once again. She remained employed at the Queens District Attorney’s Office another 13 years, through the end of 2019.

During her tenure at the Queens District Attorney’s Office, Ms. Theodorou was promoted to Supervisor in the Criminal Court Bureau; Supervisor in the Career Criminal Major Crimes Bureau; Section Chief of Violent Criminal Enterprises (within the Career Criminal Major Crimes Bureau); Deputy Bureau Chief of Criminal Court; Deputy Bureau Chief of the Career Criminal Major Crimes Bureau; and finally Bureau Chief of the Career Criminal Major Crimes Bureau. Her trial experience at the Queens District Attorney’s Office included trying Robberies; Burglaries; Weapons Possessions, Attempted Murders and Assaults; multiple Pattern Robberies and Pattern Burglaries; Gang-involved Violence and Conspiracies; the Attempted Murder of Police Officers; and Homicides.

While at the Queens District Attorney’s Office, Ms. Theodorou was the recipient of the Eugene J. Kelly Jr. Trial Award for trial excellence. She was also a recipient of the Crime Victim’s Advocates Award for her work in securing a conviction after trial on the homicide of a 14-year-old girl shot by gang members on a city bus.

Ms. Theodorou grew up in Suffolk County. After graduating Magna Cum Laude from the College of Mount Saint Vincent in the Bronx, she then worked for a year in the Nassau County Court system before attending law school at St John’s School of Law, where she graduated in 1993.

Brendan M. Ahern is a Deputy Division Chief of the Suffolk County District Attorney’s Office Trial Division. As Deputy Division Chief, Mr. Ahern oversees the Vehicular Crime, District Court, Case Advisory, and Intake Bureaus. Additionally, he works alongside members of the Executive Team to advise the District Attorney on strategy and policy matters.

Mr. Ahern previously served as the Chief of the Vehicular Crime Bureau between January 2018 and January 2020. In this capacity, Mr. Ahern managed the investigation and prosecution of all vehicular crimes in Suffolk County involving serious physical injury and death. Additionally, Mr. Ahern implemented District Attorney Sini’s “Choices & Consequences” program to educate Suffolk County high school students about safe and smart choices regarding alcohol, drugs, and driving.

Mr. Ahern began his career as a prosecutor in the Nassau County District Attorney’s Office, where he was assigned to the District Court and Vehicular Crime Bureau. In 2011, he was promoted to Trial Supervisor for the DWI Unit, and at the time he left the office he was a Deputy Bureau Chief of the District Court Bureau tasked with supervising all misdemeanor vehicular prosecutions in the county.

From 2014 to 2017, Mr. Ahern was in private practice where he successfully worked in areas of criminal defense and civil negligence. In 2017, he was recognized by the Suffolk County Assigned Defenders for his excellence in uncovering misconduct in a multi-defendant homicide case.

Mr. Ahern serves as an instructor for the New York State Prosecutor’s Training Institute (“NYPTI”) on topics ranging from homicide prosecutions, collision investigation and reconstruction, DWI investigation, and victim’s rights. Additionally, Mr. Ahern lectures on legal topics to the Suffolk County Police Academy and within the Suffolk County District Attorney’s Office.

Mr. Ahern was the recipient of the 2018 Suffolk County District Attorney’s Leadership Award. In 2019, he received awards for both his investigative work within the District Attorney’s Conviction Integrity Bureau in the exoneration of an innocent man wrongfully convicted of murder in 1977, as well as his lead trial work culminating in the conviction of a defendant who drove drunk and killed a twelve-year old Boy Scout. In January 2020, Mr. Ahern was recognized by the District Attorney Association of the State of New York (“DAASNY”) with the prestigious Robert M. Morgenthau Award. The award is given annually to one regional prosecutor that personifies a commitment to integrity and the tireless pursuit of justice.

Mr. Ahern received a Bachelor of Arts in Political Science from Villanova University and his law degree from Hofstra University School of Law, where he was a recipient of the Judge Edward J. Hart Memorial Scholarship for Trial Advocacy. Mr. Ahern was born and raised in Suffolk County, and currently lives in Suffolk County with his wife and family.

John W. Barry was appointed as the Chief Detective Investigator of the Suffolk County District Attorney’s Office in March of 2018. District Attorney Timothy D. Sini recruited Chief Barry from the Suffolk County Police Department to serve as his Chief Detective Investigator and top advisor.

Chief Barry formerly served as the 1st Deputy Police Commissioner of the Suffolk County Police Department. During his tenure with the Department, he designed and implemented numerous reforms to the Internal Affairs Bureau, making it more efficient and responsive to community complaints. Chief Barry spearheaded numerous crime fighting initiatives resulting in historic crime reductions in communities throughout Suffolk County, including Huntington Station. In addition, Chief Barry oversaw the Police Department’s new enhanced narcotics enforcement strategy. This resulted in a 118% increase in search warrants compared to prior years, hundreds of arrests and the seizure of large scale quantities of drugs. Chief Barry was also instrumental in the Department’s reengagement with its federal law enforcement partners, resulting in effective and efficient collaboration and an increase in asset forfeiture sharing for the Department. Furthermore, Chief Barry was also responsible for designing and implementing capital projects to expand the use of innovative technology to fight crime in Suffolk County.

Prior to joining the Suffolk County Police Department, Chief Barry served as a federal investigator in the United States Attorney’s Office for the Southern District of New York, where he led hundreds of investigations relating to narcotics trafficking, money laundering, and public corruption. Among the most notable of Chief Barry’s investigations are the successful public corruption prosecutions of former New York State Assemblyman Sheldon Silver and New York State Senator Dean Skelos.

Prior to joining the U.S. Attorney’s Office, Chief Barry served as a police officer and detective with the New York City Police Department (NYPD) for 20 years, beginning his law enforcement career in 1990. During his tenure as a police officer, Chief Barry was assigned to the Patrol Division in southeastern Queens and later to the Narcotics Division in Manhattan North, where he was promoted to detective. During his tenure as a detective with the NYPD, Chief Barry led hundreds of narcotics investigations, and was assigned to the elite New York Drug Enforcement Task Force, where he investigated domestic and international narcotics and money laundering investigations around the world. In Chief Barry’s 20 years with the NYPD, he developed an expertise in narcotics and corruption investigations with a focus on wiretaps and the use of confidential informants. His investigations include the successful prosecution and extradition of Manuel Salazar-Espinosa, an infamous member of the Cali Cartel, along with other high profile Colombian Narco-Terrorists from the paramilitary group, AUC. Chief Barry has been deemed an expert witness in the field of narcotics by state and federal courts. Chief Barry ultimately retired as a First Grade Detective after his 20 years of service, which is the highest honor bestowed upon detectives.

Christiana Stover McSloy serves as Senior Investigative Counsel to the District Attorney. She joined the Office in January 2018 as Chief of the Enhanced Prosecution Bureau and was promoted to the Executive Team in January 2019. Since joining the Office, Ms. McSloy has handled a variety of cases, including major drug traffickers, gang members, and environmental crimes. She received the Office’s Excellence in Investigations Award in 2018 for her work on “Operation Pay Dirt,” the largest takedown of illegal dumping offenders in New York State history.

Ms. McSloy, a prosecutor for the last 19 years, started her career as an Assistant District Attorney in the Bronx County District Attorney’s Office in August of 2000. As a member of the elite Gang Major Case Bureau, she prosecuted the County’s most dangerous gang offenders for murder, violence, conspiracy, and narcotics related offenses.

In July 2012, she joined the Nassau County District Attorney’s Office and served as Deputy Bureau Chief in the Public Corruption Bureau prosecuting high profile cases involving official misconduct and conspiracy. In February of 2015, in response to the growing number of heroin overdoses in the County, she served as the Deputy Bureau Chief of the Special Operations: Narcotics and Gang Bureau. There she supervised and prosecuted large-scale narcotics conspiracy cases that involved gang members and heroin distribution. These arrests and prosecutions of major traffickers directly impacted the opioid epidemic in Long Island. Ms. McSloy also investigated and prosecuted members of the MS-13 gang for conspiracies to commit murder and other acts of violence, as well as heroin trafficking, for which she received an award from the Federal Enforcement Homeland Security Foundation in 2018.

She has lectured for the Suffolk County District Attorney’s Office, Bronx District Attorney’s Office, Nassau County District Attorney’s Office, Nassau County Police Department and the Drug Enforcement Administration on enhancing criminal prosecutions, gangs, conspiracy, narcotics and guns, as well as conducting investigations and trial preparation.

Ms. McSloy received a B.A. in Politics, with a Minor in Philosophy from the Catholic University of America, and Juris Doctorate from St. John’s University School of Law.

In January 2018, District Attorney Timothy D. Sini appointed Leslie B. Anderson to the position of Deputy Bureau Chief on his executive staff. In that role, she focuses primarily on gang suppression, special projects and community relations.

In 1991, Ms. Anderson was hired by then District Attorney James M. Catterson, Jr., as an Assistant District Attorney. For more than ten years, she prosecuted and tried cases in the District Court Bureau, Case Advisory and Major Crime Bureaus. In 1998, she established and acted as Unit Chief for the Gang Investigations Unit until leaving the Office in 2002.

Between 2003 and 2018, Ms. Anderson worked as a Principal Attorney at the Grievance Committee for the 10th Judicial District, which prosecutes attorney misconduct on behalf of the Presiding Justice of the Appellate Division, Second Department.

Ms. Anderson is a lifelong resident of Suffolk County. She attended the University of Edinburgh in Scotland, received a Bachelor of Arts in Political Science from SUNY Albany and earned a Juris Doctorate from Union University, Albany Law School.