The FBI enters the fray as David tries to stay out of sight. The Mackenzies come under fire as questions mount about their role in the case.

David and Rachel put their freedom on the line to find Hilde Winslow. Lenny and Philip drop a bombshell revelation about the night Matthew died.

Hayden must decide whether to help his unexpected houseguest. Rachel hits a dead end. Lenny presents Cheryl with crucial new evidence.

David resorts to desperate measures to draw out an enemy. Rachel does damage control after a major betrayal. Hayden is forced to pick a side.

David must make a heartwrenching choice. Rachel faces serious danger. Sarah and Max's search for the truth comes at a cost.

The hospital holds a key clue to finding Matthew — if David and Rachel can convince Ronald to help. Sarah gains a new ally in her investigation.

With an unlikely ally at their side, David and Rachel have one chance to rescue Matthew from his captors — before he slips away for good.