Kiera and Carlos investigate a series of mysterious murders in which victims have been drained of endocrine fluid only to discover that the crimes were committed by Liber8 in an effort to save Travis, their leader. Kellog tries to make a truce with Kiera by delivering her a gift, one that could cost her and Carlos their lives and will lead to Kellog’s expulsion from Liber8.

Feeling resentful of an old classmate's success and unable to make rent, Hannah is forced to take a job at a café. Marnie has trouble handling Hannah's emotional and financial needs. Jessa runs into her old boss. Shoshanna meets her online match.

Roger seeks to expand his affair with Megan's mother. Pete has a "last" encounter with Beth with lasting repercussions. Megan struggles to find acting work and asks for Don's help getting an audition. Peggy still seeks Don's approval.

Adam and Jamie test an old dueling myth - should you really never bring a knife to a gunfight? Kari, Grant, and Tory find out if a two stage missile known as the fire breathing dragon ever really existed.

A beautiful synchronized swimmer in an elaborate mermaid costume washes ashore dead, and the clues lead Jim to a bittersweet love triangle and a hip hop mogul trying to turn a mermaid show into multimillion-dollar phenomenon. On the home front, Callie hits a wall in her job search, and Jim realizes the best opportunity for her is the one in Atlanta she passed up to be with him.