Tormented by the guilt she's carrying at having cheated on Callum, Jenny's relieved when Rhys makes a reappearance and she's able to get her secret off her chest. Cat makes a surprise reappearance in Sophie and Doug's world. She's the life of the party, and Sophie instantly finds solace in her presence. But Sophie would not be having fun if she knew the secret Cat was keeping. (thetvdb.com)