A 'Glee' curse? Fans reject the idea, but show has been haunted by tragedies
Cory Monteith, addiction and the search for better endings
Cory Monteith's Mom Opens Up About His Drug Addiction, Failed Rehab Stays | PEOPLE.com
How 'Glee' will handle Cory Monteith's death | CNN
Cory Monteith - Death, Age & Glee - Biography
Cory Monteith: Glee star's death from heroin overdose was accidental, coroner rules - Irish Mirror Online
Is this the proof that Cory Monteith's heroin addiction stems back a year? Pictures from 2012 appear to show 'needle marks' on his arm | Daily Mail Online