The 2013 film Behind the Candelabra is based on Scott Thorson's 1988 memoir of the same name. The movie purports to dramatize Thorson's relationship with Liberace, from 1977 until shortly after the latter's death in 1987.
The movie doesn't always depict Thorson in the most flattering light. His drug addiction and the problems it causes (deceitful behaviour, violent tantrums, etc.) are frankly portrayed.
This makes me wonder to what extent the movie is a faithful adaptation of the book. Is Thorson's autobiography as unkind to himself as parts of the movie are? Also, are there any major events depicted in the movie that are described differently in the book, or not discussed at all?
(Note that I am not asking whether the movie gives the "true story" of Thorson, Liberace, and the events they were involved with. I just want to know whether it matches what is written in the book, even if Thorson himself is an unreliable narrator.)