Sarah and Holder discover more on Rosie, but the investigation gets stalled when they have to set out on a search for Jack.

The investigation refocuses on the casino; Stan has an uneasy face-to-face with Richmond; tension grips the Larsen house.

Sarah teeters on the edge. Stan attempts to make amends. Richmond receives an unexpected boost in the mayoral race.

Sarah copes with the consequences of past mistakes; Holder wrestles personal demons; Seward is truthful.

While covering up Lt. Skinner's sudden disappearance, Linden and Holder are assigned a new case: the brutal murder of an entire family with ties to a military academy.