Actor Ryan Grantham was sentenced to life in prison for shooting his mother. Grantham, known for his role in Diary of a Wimpy Kid and Riverdale, pleaded guilty to second-degree murder in March 2020. He killed his mother, Barbara Waite, reports People magazine. Actor Ryan Grantham. Source: Profimedia The 24-year-old was given a life sentence on Wednesday at the Supreme Court of British Columbia in Vancouver. According to Canada’s CBC, he will not be eligible for parole for 14 years. Judge Kathleen Ker said the actor had mental health issues. She also noted that he had been struggling for weeks before the actor pulled the trigger and was viewing violent footage on the dark net. He is receiving psychiatric treatment in prison and appears to be improving, the judge said, according to the CBC. Attorney Chris Johnson said Grantham was not shocked by the verdict, according to CTV.