Article continues below advertisementThe final defendant has pleaded guilty in connection to Matthew Perry's devastating October 2023 death.On Wednesday, September 3, "Ketamine Queen" Jasveen Sangha pleaded guilty in Los Angeles to one count of maintaining a drug-involved premises, three counts of distribution of ketamine and one count of distribution of ketamine resulting in death or serious bodily injury.Matthew's mom, Suzanne Perry, and his stepfather, Keith Morrison, were present in the court room during Jasveen's plea hearing. As a result of the deal, Jasveen faces decades in prison.