Glee followed the dramatic lives of a group of teenagers in a singing club in a fictional American high school. But it turns out most of the drama happened off camera as this TV series, which ran from 2009 to 2015, had a very dark side.
Lea Michele has been accused of bullying her co-star Samantha Ware, who said she made her life "a living hell" during filming.
Naya Rivera was charged with charged with domestic battery in 2017 and she also released her explosive memoir in which she likened the set to a "polygamist cult" because of all the bed-hopping.
There was also the tragic death by suicide of Cory Monteith, while Mark Salling died after he pleaded guilty to possession of child pornography involving a prepubescent minor.
Read more on mirror.co.uk