About the Office
Meet District Attorney Sini
Bureaus and Units
Reforming Criminal Justice
Combating the Opioid Epidemic
Cracking Down on Drunk and Distracted Driving
Protecting Victims of Sex Crimes and Human Traffic
Protecting Our Environment
News and Public Information
Special Grand Jury Reports
Criminal Justice Procedures
Crime Victims’ Information & Resources
About the Office
Meet District Attorney Sini
Bureaus and Units
William T. Ferris III
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.
Chief of Staff
Justin S. Meyers
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.
Special Investigations Division Chief/Special Counsel to the District Attorney
Howard S. Master
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.
Investigative Division Chief
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 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. 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.
Trial Division Chief
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.
Senior Investigative Counsel
Christiana Stover McSloy
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.
Deputy Bureau Chief
Leslie B. Anderson
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.
Deputy Chief Investigator