Leonardo DiCaprio has signed on to play notorious serial killer Dr. H.H. Holmes in an adaptation of Erik Larson's non-fiction novel Devil in the White City. Set against the backdrop of the 1893 World's Fair, the story goes that Holmes built a hotel complete with a gas chamber, crematorium and dissecting table and then murdered between 27 and 200 females who checked in. It's not quite as bad as it sounds though -- he was also apparently very charming. [Deadline]
