The Craigslist Killer Lifetime original movie premiered on Monday night and about 5.4 million people tuned in according to Nielsen Research. There was 2.7 million among 25-54 year olds. This is the most-watched movie on ad-supported cable in the last 2 years for this demographic. The movie had 2.1 million women viewers 18-49 and 1.9 million women 25-54. This was Lifetime’s 5th most watched original movie premiere in the network’s history. This movie is based on the life of Philip Markoff.