Will travels with Spangler to DC, leaving the team to make a very important decision on their own. Katherine finds a suspicious voicemail on Tom's cell phone from the day before he died.

David's code leads Will to suspect someone at API. Katherine loses faith in Wheeler and decides to take matters into her own hands.

Ingram makes Will a surprising offer. Katherine finds a connection between Tom's death and another suicide victim. Maggie allows Craig to take Sophie for the night.