2. Cory Monteith (1982 – 2013)
On July 13th, 2013, beloved Glee star Cory Monteith was found dead in his Vancouver hotel room from an overdose of heroin and alcohol. Although it was known that he had struggled with addiction as a teen, his death came as a shock to both his friends and fans. Monteith was 33 years old.
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