Castle started off as a writer helping a cop on murder investigations. Simple, right? Then the conspiracies multiply and Castle and his comrades take a turn down a dark, dark alley.

Kate Beckett's mother was killed and over the course of five seasons, you learn that it wasn't a random murder at all. But that storyline is sprinkled over episodes with minimal plot outside of the investigations, dead divas and murdered makeup artists. The 3X Killer provides some sporadic intensity, but mostly it's a light-hearted show filled with sarcastic about a cop and her writer finding love among corpses. Few characters can better represent a middle-aged man trapped in the body of a giddy little boy than Richard Castle.


Airs Mondays 10/9c

Run time: 60 minutes