Dexter tells Hannah she needs to leave the country and helps her obtain a new passport. While they wait, the two make a trip to the Keys to find Zach whom Dexter believes killed his neighbor Cassie in a fit of uncontrollable rage. 

Deb follows Dexter and Hannah to the Keys and confronts Hannah while Dexter is out. Deb plans to bring her in for the bounty but ultimately gives up her pursuit after a candid conversation. She considers leaving Elway's firm to return to the force. 

The Brain Surgeon returns.