Sarah and Holder's investigation comes to a close. Meanwhile, Richmond sets out on a bold new course; and a surprise source helps bring closure to the Larsens.

Sarah and Holder close in on the murderer. Meanwhile, the Richmond campaign preps for the election; and the Larsens seek to get their lives back in order.

A return to the casino winds up sending Sarah and Holder on the run, while Stan and Richmond face life-altering decisions.

Sarah is at her wit's end; Stan tries to mend fences; and Richmond gets a surprise boost in the mayoral race.

Richmond lends support to the investigation; Sarah tries to track down Rosie's key; and Stan deals with his troubled son.

Holder disappears and a desperate Sarah goes looking for him; Stan decides to take matters into his own hands; and Richmond returns to City Hall.

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

Sarah zeros in on a Larsen-family secret; Stan comes to grips with some past indiscretions; and Mitch takes in a runaway girl. Meanwhile, the Richmond campaign entertains a surprise visitor.

Sarah receives a message from the dead that may shed light on the identity of Rosie's killer. Meanwhile, Mitch befriends a young runaway; and Richmond has grave doubts about his future in politics.

The tattooed mystery man is identified; Jamie seeks help from Gwen; Stan's troubled past catches up to him.

Sarah searches for Rosie's backpack, while Richmond comes to grips with his situation and Mitch finally turns up. Later, Stan's involvement with the mob proves troublesome.

An unsettling discovery is made at the Larsen house while Sarah is on her way to Tacoma, where she uncovers a revealing secret about Richmond.

Sarah returns to Seattle to look into a possible cover-up involving the events that led to Councilman Richmond's arrest, and she wonders if she can ever really trust Holder again.