Janetta Marbrey’s path to becoming Mercer County Prosecutor began in a high school civics class.
While prosecuting her teacher, who was playing the role of “The General,” in a mock trial on the Kent State massacre, she pressed him with a question.
When he hesitated, she quipped, “Oh, General, you have trouble hearing?”—a sharp reference to the very miscommunication that led to the tragedy. The class erupted, and at that moment, Marbrey’s interest in law took hold, shaping her future in prosecution.
Growing up, Marbrey saw the meaning of hard work firsthand. Her father, a truck driver, and her mother, a kitchen supervisor at Ohio State University, poured their energy into their work, showing her that success isn’t given—it’s earned. Their determination became the foundation of her own drive, pushing her to chase her ambitions with the same relentless work ethic.
“The two of them were very hard workers, and I knew that was something that was integral in my family,” says Marbrey, now a resident of Ewing Township. “So, their work ethic became my work ethic.”
Marbrey’s relentless drive has propelled her legal career. She earned her bachelor’s degree in political science with a minor in secondary education from Spelman College before refining her legal expertise at Rutgers Law School in Camden. There, she developed sharp analytical skills and a determination that continue to define her career.
She launched her career as a law clerk for Judge Edward Mennetti in Camden County before joining the Mercer County Prosecutor’s Office in 1983 as an assistant prosecutor under Philip Carchman. This marked the beginning of her time as a trial lawyer.
Early in her career, Marbrey learned how to handle the fast-paced world of law, often preparing one case while a jury deliberated on another. Through that experience, she learned that success in the courtroom comes down to preparation and adaptability—knowing the case inside and out, anticipating touch questions, and always being honest with the jury.
As she puts it, “You may not win with the truth, but you will never win with a lie.”
Equally important, she discovered the power of listening.
“You learn more about a situation by listening to the people involved,” she says. “Don’t come in with your mind closed to what the facts or truth might be. Sometimes what you think matters, but other times, it’s more important to understand how others feel.”
That lesson influenced her methodology as both a prosecutor and a leader, reinforcing the importance of approaching each case with impartiality and a comprehensive understanding of its impact on all parties involved.
Beyond the courtroom, Marbrey is passionate about reshaping the public’s perception of law enforcement and expanding its role in the community.
“A lot of people don’t see being in law enforcement as being an honorable profession, and it’s been a tough time for those in the field,” she acknowledges. “But it’s important, and we need young people to recognize that there’s a role for them.”
She emphasizes that whether in roles as investigators, attorneys, or victim witness advocates, the work encompasses much more than prosecution.
In terms of strengthening the relationship between law enforcement and the community, she encourages residents to share information about local initiatives, knowing that collaboration can lead to meaningful change.
Mabrey says she hopes that when her office is involved, the community sees them as more than just prosecutors.
“I want people to recognize us not as an occupying force, but as a support for their lifestyle,” she says. “When there’s a crime, we prosecute fairly, always mindful of the community, the law, and the safety of our officers.”
Since taking office, Marbrey has been learning how deeply the prosecutor’s office is embedded in the community. Programs like DARE and school-based initiatives have long connected law enforcement with resisdents, and she is committed to building on that foundation.
“I’ve only been here about two months, and every day I learn about another program, another community meeting, another way this office has been involved,” she says. “The previous prosecutors were very active in the community; I just want to make sure that we continue what they did and find even more opportunities.”
Looking ahead, Marbrey has two key priorities.
“Number one is staying vigilant,” she says. “Things change so much in law enforcement, so my top priority is stay vigilant to make sure that we are not only responsive and reactive, but we are proactive. Something may not be happening here yet, but if it’s affecting other counties or states, we have to be mindful of the potential impact and prepare accordingly.”
The goal is to identify and address issues before they escalate.
Her second priority is fostering a strong, motivated team within the prosecutor’s office. From the clerical staff managing critical documents to attorneys presenting cases in courts, every role contributes to public safety and justice.
“I want them to feel appreciated and know that what they’re doing is important to the safety and happiness of the people in Mercer County,” she says.
Ensuring that everyone in the office understands their impact is central to her leadership approach.
Beyond traditional law enforcement efforts, Marbrey also focuses on programs that address broader issues affecting Mercer County, such as substance abuse and mental health crises.
Recovery Court offers an alternative path for individuals struggling with addiction, providing treatments and rehabilitation opportunities rather than immediate incarceration.
Another initiative, “Arrive Together,” pairs police officers with mental health professionals when responding to calls involving mental health. This program helps ensure that those experiencing mental health challenges receive the appropriate care and intervention, reducing unnecessary arrests and improving outcomes for those in need.
While Marbrey’s focus remains on law enforcement and community engagement, her personal experiences continue to shape her leadership and dedication to public service.
Marbrey’s path to law wasn’t a straight line— it was shaped by hard work and a deep commitment to education. After moving to Camden, she balanced teaching in an adult education program while taking night classes at Rutgers Camden.
Initially, she considered a different path, even earning admission to Brown University for a graduate degree. Ultimately, she chose Rutgers Law School, a decision that put her on the path to becoming a prosecutor.
Marbrey’s commitment to mentorship and professional development extends beyond her office and into organizations like the Association of Black Women Lawyers. She sees groups like this as a valuable resource— not just for networking, but for meaningful community engagement.
For young lawyers, Marbrey emphasizes the importance of work ethic over prestige.
“Sometimes it’s better to be a workhorse than a show horse.” She believes that showing up and working hard can be just as valuable as academic accolades.
Above all, she encourages young professionals to enjoy the journey.
“Don’t forget to have fun,” she adds, recognizing that a fulfilling career isn’t just about success, but about finding joy in the work.
As Mercer County prosecutor, Marbrey leads with relentless dedication, a deep commitment to justice, and a passion for serving her community. But at the core of her success is a belief in hard work and opportunity.
“I’ve always figured I got this job because I worked hard and I was qualified,” she says. “And that’s how it should be for everyone. I hope I’m not the last of any so-called identifiable minority to hold this position, but more importantly, I believe every office should reflect the people of Mercer County. No matter their appearance or background, if they work hard to qualify, they should get the job.”
