It's an old movie. Not a flash-a-minute rush by any means, but still really good. The three endings will have you watching it again and again to try and figure out how you missed all the clues and how Tim Curry's slightly neurotic and completely cunning butler could see them. There are a few references to sex that aren't as easily lost in the fast banter as others, and the characters are drinking throughout most of the earlier scenes, but it's not a central theme - it's just sort of there. It is, obviously, a murder mystery so people die but it's handled in an almost comedic way with nothing graphic. Older movies are much more mild than newer ones, and this movie follows that theme well. A real classic!