Attorneys you can trust to fight for you. Experienced and aggressive representation you can count on.
Our Firm

Diligence, persistence, and preparation are the keys to our successful litigation practice.


Mr. Sher started his career as a prosecutor for the Arlington County Commonwealth Attorney’s Office and is famous for his dogged prosecution of a “cop killer”, as well as other serious felonies. One of his notable civil cases was against the Federal Republic of Germany on behalf of a Holocaust survivor.

Click here to read more about David Sher. 



 Mr. Cummings launched his career in law representing W. Mark Felt (“Deep Throat”) in the FBI civil rights conspiracy trial, and also worked toward the subsequent pardon by President Reagan. Mr. Cummings has been consistently recognized as an outstanding trial lawyer by his peers and in legal publications. He recieved his undergraduate degree in History at University of Virginia, where he made the Dean’s List. Later, Mr. Cummings earned his degree in law at the George Mason University Law School.  

Click here to read more about Mark Cummings.



After years of practice in the areas of civil and criminal litigation, David Sher and Mark Cummings formed Sher & Cummings in 1983.  In 2003, Mr. Sher and Mr. Cummings were joined by John Ellis, a renowned medical malpractice attorney, and the firm changed its name to Sher, Cummings and Ellis. Like any successful organization, it is the attorneys of Sher, Cummings and Ellis who make the firm exceptional. Our attorneys have represented individuals in multi-million dollar lawsuits involving wrongful death, personal injury, defamation, attorney malpractice and fees disputes, as well as various criminal matters ranging from DWI to murder.


Adam earned his Bachelor of Business Administration from The College of William and Mary. Prior to law school, he worked as a paralegal at the Lawfirm of Rees Broome PC in the firm’s community association department.  During law school, he was a George Mason School of  Law Trial Advocacy Association Board Member. He is interested in criminal and civil litigation, and very passionate about personal injury. 

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Our partners have been practicing law since the 1970’s, and for the past 33 years, Sher, Cummings and Ellis has focused on providing the highest caliber representation for our clients. We treat our clients like they are part of the family, and as a result, most of our work comes from referrals of past clients. We are dedicated and responsive advocates who will work with you to achieve the best possible result in your case. Over the years, our attorneys have been recognized for their professional expertise. Both David Sher and Mark Cummings are AV rated by Martindale Hubbell, and have been selected yearly for Super Lawyers recognition since 2007 and 2008, respectively. They have also been recognized in the Washingtonian Magazine’s Top Criminal Defense Attorneys List.


Rachel Lustig

Legal Assistant

Rachel is the legal assistant at Sher, Cummings and Ellis.  After multiple internships at the firm, Rachel returned as a full-time employee in September of 2019.  She assists the attorneys in personal injury, civil, and criminal cases, as well as with administrative work and estates.   She provides support to the attorneys and is integral to keeping our cases on track.

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Asta D'Errico

Office Manager

Asta came to our office in 2018 as firm administrator.  She helps keep the firm running by managing our accounting, invoices, and ensures an efficient and organized workplace.  Asta oversees our office and is responsible for anything from firm-related event planning to monitoring the business and administration aspects of the law-firm.  

Jim Kibble


James E. Kibble retired from the Drug Enforcement Administration after 26 years of distinguished service, and has been serving as a consultant for the Central Intelligence Agency for 16 years. Since 2004, Mr. Kibble has been the lead investigator for our firm.

Click here to read more about Jim Kibble. 

John P. Ellis

Now retired, John led an extensive practice in personal injury, motor vehicle accidents and injuries, wrongful death, medical malpractice, product liabilities, and civil litigation. John served as the President for the Virginia Trial Lawyers Association and practiced law in Arlington, Virginia for over 40 years. John believed in helping people through pro bono work and volunteered with the Legal Services of Northern Virginia. John is now living in Colorado, and enjoys skiing while in retirement.