Beckett will finally be forced to face her PTSD head-on in Monday's episode of Castle.
When a sniper begins taking out New York City citizens at random, Beckett (Stana Katic) will begin to relive her own experience of being shot by a sniper in the Season 3 finale. As the case heats up, she'll become more unstable, forcing her to confront her "lost" memories after the shooting.
Check out this first look at Monday's episode to find out just how far down the rabbit hole Beckett will go:
Castle airs Mondays at 10/9c on ABC.