Prominent among the names is 41-year-old Jasveen Sangha, a dual U.S.-British citizen who in Hollywood circles has been dubbed “the queen of ketamine. ” According to the prosecution, she provided Perry’s fatal dose. She has pleaded not guilty; if found guilty at trial, she could be sentenced to life in prison.

Dr. Salvador Plasencia has pleaded guilty to four counts of distribution of ketamine in connection with Matthew Perry's death. The doctor's plea agreement states that he distributed 20 vials of ketamine,

Dr. Salvador Plasencia, who was charged alongside four others for his role in actor Matthew Perry's death, pleaded guilty in court July 23.