Season 2 premiered on September 21, 2009 with an initial order of 13 episodes. Eventually, it was increased to 22, then to 24.
As Castle prepares for the release of his first Nikki Heat book, he works at mending his damaged relationship with Beckett. Eventually, she forgives him and they resume their regular partnership of solving cases while at the same time flirting and angering each other. However, things get more serious when an obsessed fan of Castle's books threatens Beckett's life and a case reveals a connection to Beckett's mother's murder. Old and new flames also surface to further complicate Beckett's and Castle's feelings for each other.
Weird Crime Scenes
Season 2 Intro
Most episodes of Season 2 begin with the following dialogue:
Castle: There are two kinds of folks who sit around thinking about how to kill people: psychopaths and mystery writers. I'm the kind that pays better. 'I'm Rick Castle...Castle...Castle. I really am ruggedly handsome aren't I?' Every writer needs inspiration, and I found mine. Beckett: Detective Kate Beckett...Beckett...Beckett. Nikki Heat? Martha Rodgers: The Character he's basing on you. Castle: And thanks to my friendship with the mayor I get to be on her case. 'I'd be happy to let you spank me.' And together we catch killers. 'We make a pretty good team you know? Like Starsky and Hutch, Turner and Hooch.' Beckett: You do remind me a little of Hooch.