The cast of The Intervention consists mostly of actors and actresses that are known from series. Nothing wrong with that as there are a lot of good actors in those series. Interesting to watch them in a movie though. The story starts mildly interesting but the more you get into the plot the lesser interesting it gets. I got pretty bored towards the end. Melanie Lynskey plays an annoying character, difficult to like to be honest. She was the reason that I lost complete interest in this movie. It's just a mediocre movie, really nothing to write about. I guess some people might enjoy it, sadly I'm not one of them.