As “Sarah,” Mireille Enos (Big Love) portrays the lead homicide detective that investigates the death of Rosie Larsen. Other previously announced castings include: Billy Campbell (Once and Again) as Darren Richmond, Seattle’s City Council President, running for Mayor; Michelle Forbes (True Blood) as Mitch Larsen, the victim’s mother; Joel Kinnaman (Snabba Cash) as Stephen Holder, an ex-narc cop who joins the homicide division in the investigation to find Rosie Larsen’s killer; and Brent Sexton (W., In the Valley of Elah) as Stan Larsen, the victim’s father. The series ties together three distinct stories around a single murder including the detectives assigned to the case, the victim’s grieving family and the suspects. The story also explores local politics as it follows politicians connected to the case. As it unfolds, it becomes clear that there are no accidents; everyone has a secret, and while the characters think they’ve moved on, their past isn’t done with them.