Law and Order

Peter Stone was a former Assistant State's Attorney in Chicago, and the former assistant district attorney for the Special Victims Unit.


Stone was the second child born to former E.A.D.A. Benjamin Stone. His older sister Pamela suffered from schizophrenia and lived in a mental ward. Before becoming a lawyer, Stone was a pitcher for the Chicago Cubs' Minor League system but was forced to retire when he tore an elbow ligament and decided to follow his father's footsteps. Prior to becoming the Assistant District Attorney, he worked as Deputy Chief of the Special Prosecutions Bureau in the Cook County State's Attorney's office. (Chicago Justice)

After the death of his father, Stone attended his funeral. In attendance were District Attorney Jack McCoy and A.D.A. Rafael Barba. Jack McCoy delivered the eulogy, and later, the duo reminisced on Benjamin's last days, with Stone saying that he was never close to his father. Later, Stone began crying over his loss after entering an empty courtroom and remembering his father.

Stone later became Special Counsel during Barba's trial after he ended the life of an infant boy suffering from MDDS by turning off his life support. Although Barba was acquitted of all charges, he was too traumatized by the incident and resigned. As a result, Stone took his job as the A.D.A. assigned to the Special Victims Unit. (SVU: "The Undiscovered Country")

Stone later received a threat regarding Pamela whilst the SVU were investigating a case. His sister was then kidnapped during a massacre at her mental ward. She was later shot to death in a standoff between the police and her kidnapper before the kidnapper was shot dead by Fin, Carisi, and ESU. Stone rushed to his sister to help her, but she died in his arms. This deeply traumatized him, and he cried in Benson's arms in his office. (SVU: "Remember Me Too")

Later, Stone welcomed both Benson and Carol Solomon to teach rape and murder suspect Tony Kelly a lesson. Tony tried to attack Carol, but Benson restrained him while Stone protected Carol. Stone then helped Benson arrest Tony for raping Carol and killing her boyfriend. (SVU: "Revenge")

Peter worked a case that was previously worked by his father involving a serial rapist known as "Infinity" for years until it went cold in 1994. Peter recalled his father making him and his sister go to the home of his aunt. He confided in Carisi on how this strained his relationship with Ben. Eventually, Peter discovered his father was only trying to protect him and his sister once he found letters that revealed the rapist was stalking them and how they were sent away to be safe. Peter managed to catch the rapist after he resurfaced decades later. (SVU: "Dear Ben")

Stone was accused of rape by a woman named Sarah Kent and charges were pressed against him. Benson arrested Stone for rape but later released him. Afterwards, he was held hostage by Sarah's husband Gary. Suddenly, Benson rescued Stone, who allowed the police to arrest Gary. It was soon discovered that Stone's friend Reggie Gregg was the rapist and had set up Stone. Benson arrested Gregg for rape, resulting in the charges against Stone being dropped. (SVU: "Mea Culpa")

During the Rob Miller case, Stone collaborated with Nikki Staines to get Miller convicted for the murder of Lindsay Parker based on purely circumstantial evidence, endangering his career and disregarding his ethics in the process, partially on Benson's behalf despite her misgivings. Desiring to distance himself from any potential reprisal regarding the Miller case, as well as realizing the effect the SVU and its cases have on him, Stone ceases further work with the SVU and leaves the precinct, but not before wishing Benson good luck in her future. (SVU: "End Game")

On the Job

He is a strict, no-nonsense, by-the-book ADA who doesn't tolerate disturbances or unprofessional investigations in cases.