When Barry and Team Flash find a way to enter The Thinker’s lair, Ralph considers crossing a dangerous line to defeat DeVoe. Meanwhile, Joe is concerned by Harry’s recent behavior.

A family in distress boards the Abigail. Strand branches off and his past begins to emerge. Nick searches for an associate of Strand’s.

Alicia works toward reuniting with her family. Travis comes across a familiar face. Madison and Nick try to save their family against all odds.

Conflict arises as the Abigail approaches its destination. Chris makes a staggering decision. Nick meets a new maternal figure.

The family faces their biggest test yet; Nick, Madison, Travis and others try to stay close to each other.

The CSI team is called in to investigate the stabbing of a couple found at a local motel that is reminiscent of two incidents that occurred in the same room.