A troubled detective returns to his hometown to investigate why a young boy would kill his parents.

Heather makes a startling realization about Marin. Vera and Julian are dealt a hard blow.

As Ambrose zeroes in on a new suspect, a rift develops between him and Heather.

Vera reveals Mosswood's past to Ambrose, leading to a turn in Julian's case.

Heather and Ambrose search for Julian.