By that time, his drug and alcohol dependency had increased and Monteith turned to petty crimes, such as stealing money from friends and family, to fund his addictions.In 2005, he appeared in Killer Bash, about a tormented geek's soul that was taking revenge on his murderer's children by taking over a girl's twin body.
The character must deal with his attraction to both head cheerleader Quinn Fabray (Dianna Agron) and glee club star singer Rachel Berry (Lea Michele), and his storylines increasingly focus on his relationship with them both.
Monteith felt that Finn has had to grow up a lot during his time on the show.
Following his success on Glee, Monteith's film work included the movie Monte Carlo and a starring role in Sisters & Brothers.
Monteith had a troubled adolescence involving substance abuse from age 13; he left school at age 16.
Consequently, the season premiered a week later than planned.