This movie isn't necessarily laugh-out-loud funny, although Morgan rather talking to a jailed serial killer than having a conversation with her friends is absolutely hilarious. The best part of the movie is the relationship between Morgan and Jean-- I thought all of their conversations were absolutely hilarious. The actresses have really good chemistry and are great to watch.
I was engaged the whole time, and the intrigue (is Simone a killer? Is Morgan just terrified of showing vulnerability?) carries on throughout the movie. I'd definitely recommend it.