Castle: Season 6 Episode 1: Valkyrie
Starring: Nathan Fillion, Stana Katic, Susan Sullivan, Jon Huertas, Seamus Dever, Tamala Jones, Molly C. Quinn, Penny Johnson Jerald
Length: 44 minutes
Castle: S06E01 Description: Castle and Beckett are engaged. Beckett starts FBI training in Washington D.C. and is assigned to a case. Someone broke into a secured building and may have stolen codes. Castle flies to D.C. and is exposed to a deadly toxin. The code theft was a diversion.