The investigation into Rosie’s killer begins as Sarah and Holder question the missing girl’s parents, Stan and Mitch, as well as Rosie’s friends and City Councilman Richmond. Rosie’s school becomes a potential murder site when Sarah and Holder uncover shocking evidence on campus. Heartbroken and grief-stricken, Mitch and Stan face the aftermath of losing their daughter.

Mitch questions the validity of the police investigation while Richmond has to deal with a negative ad. It's discovered that Rosie was at Bennett's apartment the night she died.

Richmond rises in the polls; a surprising individual turns himself in.

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.

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

Sarah makes a grim discovery in regards to her past; Holder catches an unsettling case; Seward shows his true colors.

Reddick digs deeper as Linden and Holder struggle to keep their investigation from going cold.