The tragic story of Matthew Perry’s death took a new turn in early July. The “Friends” star drowned in his pool on Oct. 28 after consuming too much anesthetic ketamine — a drug used to treat mental health issues such as depression — in what was ruled to be an accident. The coroner determined that the actor’s coronary heart disease and buprenorphine, a medication used to treat opioid abuse, also contributed to his death, per the Associated Press. According to celebrity news magazine In Touch, another celebrity may have played a part in the tragedy. In Touch’s supposed anonymous source does no…