The boys make a discovery that sets Adam on Corinne's trail — and dredges up an old secret of his own. Kimberly gives Johanna a lead about Heidi.

Adam tells Johanna about his encounter with the stranger. The kids spy on Olivia's house. Martin's appeals finally run out.

A violent confrontation leads to new revelations, and the truth about Corinne's disappearance finally emerges.