In the Kingdom of the Unabomber - S1.E9

Gay Greenberg was a psychotherapist that wanted to become a writer. His career as a writer lead to nowhere, and he decided to seek help from a famous author. This is why he started to correspond with Ted Kaczynski, not knowing that he was the notorious Unabomber. Instead of finding help on his career as an author, Greenberg found himself dragged into Kaczynski's paranoid nightmare.