“We trusted Kenny. Kenny’s most important job – by far – was to be my son’s companion and guardian in his fight against addiction,” Perry’s mother, Suzanne Morrison, wrote in a letter to the court, contained in a prosecution finding. “His number one responsibility,” she wrote, was to “ensure that Matthew remained what he wanted to be: drug free.”

Federal prosecutors are making a serious new claim about Matthew Perry’s former live-in assistant, Kenneth Iwamasa, as he awaits sentencing in the ketamine case tied to the actor’s death. According to newly filed court documents,