Dylan helps the daughter of a mob boss. A grandmother comes to med desperate to save her grandson.
When Beckett and her team burst into an apartment on a murderer's trail, they see Castle standing over a dead woman's body holding a gun; Beckett arrests Castle as he asserts his innocence.
Patrick Jane tries to prove a man carrying a gun at a political rally is planning to commit murder; Lisbon looks into a photographer's death.
Jane encounters a blogger (David Paymer) who has devoted his life to finding a serial killer.
The team investigates a retired professional football player's (Craig Bierko) presumed death after his car explodes; Harrigan and Rigsby move forward in their relationship.
