RaquinMercer—Rockville’s Best Defense Attorneys

RaquinMercer represents clients facing misdemeanors and felonies in Maryland and the District of Columbia at trial, on appeal, and in post-conviction proceedings. Our team has decades of litigation experience that can make the difference in your case.


RaquinMercer offers advanced DNA/forensic science consulting services for clients and attorneys. We identify the problems with DNA/forensic science in your case and develop comprehensive solutions and strategies to make sense of the science.

RaquinMercer commits to the highest quality of representation for our clients. Our mission is to serve you. Our clients are the best ambassadors of our dedication to excellence. Read here what our clients say about our commitment to them.

NBC News Think: Steve Mercer on why private DNA databanks are the next big privacy battleground.

Steve Interviewed by FOX5 DC.

Golden State Killer case raises privacy concerns about DNA submitted to genealogy websites

WASHINGTON – Authorities have revealed that they were able to track down California’s most elusive killer by using a genealogy website. After the major break in the decades-old case of the Golden State Killer, the usage of familial data in a police investigation is now in the spotlight.

Sean Rameswaram talks with Steve Mercer about the DNA Familial Searching

In Today, Explained by Vox, Sean Rameswaram talks with Steve Mercer about the DNA familial searching in the Golden State Killer case opening Pandora’s box.

A DNA Database Helped Find A Suspected Serial Killer. How Is Your Privacy Affected?

More than a million Americans are sharing their DNA with ancestry websites. That helped the cops find the Golden State Killer. Good police work, but troubling implications for privacy.

About our Team.

Isabelle Raquin and Steve Mercer share a life-long commitment to securing freedom for wrongfully charged and convicted people. In this story written by Megan Rose and published by The Atlantic and ProPublica in 2017, you can read about Steve Mercer’s commitment to securing freedom for two wrongfully convicted men who were prosecuted based on junk science and a false confession, but decades later exonerated by DNA—only to face another round of prosecution. Read about our team.

What Our Clients Say About Us

To our current and former clients: we thank you sincerely for your trust and patronage.

To our future clients: we look forward to working with you.

Isabelle Raquin Testimonial from Joe

Because of Mrs. Raquin extensive experience dealing with criminal cases, she was able to assess my situation with close detail, look at the facts, and the law as it applied to my charges, and pay personal attention to my concerns regarding the outcome of the case…