Matt's past comes back to haunt Ava and Nathan; Ava realizes her obsession has become an addiction.

Cast: Kaley Cuoco, Chris Messina, Tom Bateman, Liana Liberato, Melissa Fumero, June Diane Raphael, Annabelle Dexter-Jones, Jessica St. Clair, Sara Paxton, Rory Scovel, Matthew Law, Deb Hiett, Kellen Patino