Based on Stephen King's bestselling novel of the same name, The Outsider follows a seemingly straightforward investigation into the gruesome murder of a young boy. The crime, however, leads a seasoned cop and an unorthodox investigator to question everything they believe to be real, as an insidious supernatural force edges its way into the case.

The series is set in the Florida Keys and centers on a close-knit family of four adult siblings whose secrets and scars are revealed when their black sheep brother returns home.

The show focuses on two different families, the Williams' and the Kovac's. The show stars some of Australia's most talented actors including Catherine McClements, Ben Mendelsohn, Justine Clarke, Matt Day, Joel Tobeck and Kat Stewart.