Actor Sentenced To Life For Killing Mother 

Ryan Grantham, known for "Diary of a Wimpy Kid" and "Riverdale," killed his mother. 

Prosecutors say the former star, 24, admitted to killing his mother in a GOPro video. 

Ryan pleaded guilty to second-degree murder for killing his mother six months earlier. 

A Canadian judge gave him life in prison on Sept. 21. She called it "life- changing  

Could've been worse. Prosecutors say Ryan also wanted to kill Justin Trudeau. Ryan filled his car with firearms, ammunition, Molotov cocktails,  

and Prime Minister's home instructions a day after his mother's death. He wrote in his diary about Trudeau. 

Ryan considered a mass shooting while travelling to Trudeau's home, said. He turned himself in to Vancouver police.