When Castle and Beckett discover that the victim of a building fire was actually shot to death, they get on the trail of a serial arsonist turned murderer. Meanwhile, Ryan's wife, Jenny, goes into labor, but disaster threatens to ruin the joyous mome... (more)nt.

Ethan Cohn, Jamie Harris, Juliana Dever, Kimberly Fox, Maya Stojan, Nic Bishop, Robert Cicchini, Tim Ryan, Wendy Davis