Monster is a 2003 crime drama film about serial killer Aileen Wuornos, a former prostitute who was executed in Florida in 2002 for killing six men (she was not tried for a seventh murder) in the late 1980s and early 1990s.
After leaving Michigan and going to Florida, Aileen Wuornos, a prostitute gets to meet Selby Wall inside a local gay bar. After some hostility and saying that she is not gay, Aileen talks to Selby and have some beers. Selby starts to like Aileen almost within seconds, as she likes that she is very protective towards her. Selby asks if she wants to spend the night over with her. They come back to the house where Selby is staying. But suddenly afterwards Aileen get's raped by a client, Vincent Corey, she kills him in self defense and decides to quit prostitution.