Beckett finds herself in the Captain's chair while Castle makes the leap from author to full-blown Private Investigator. The season begins with a bang as a call from a mysterious stranger puts Beckett on the run and sets off an explosive chain of events. The action gets even more exciting, and a little crazy, when Castle's daughter, Alexis, joins her father to solve the case of a lifetime.
In season two, the Mars family find themselves embroiled in another season-long mystery hitting closer to home following a new local tragedy. Veronica must also deal with her increasingly complicated romantic life and a whole new school year.