A sniper on a killing spree is terrorizing New York City. With the clock ticking down to the next murder and nothing to go on except a killer with no apparent motive but to instill terror, this could prove the team's toughest case yet. The hunt is made even more complicated when Beckett begins to experience increasingly strong moments of PTSD - moments she tries hard to hide from Castle and the detectives.
|Tony Elias||Guest Star|
|Karissa Vacker||Guest Star|
|Michael Dorn||Guest Star|
|Scott Michael Campbell||Guest Star|
|Troy Winbush||Guest Star|
|Mandy June Turpin||Guest Star|