When Olivia attempts to blackmail Mary, she is drawn deeper into a deadly game of cat and mouse.

Ben and Mary team up to take down Olivia, but Mary betrays him... again. She and Des handle Travis, while, back at Mary's house, Jess throws a disasterous party.

Naomi comes close to telling Jess her mother's secret when the two are forced together as a punishment for the party.

All seems well for Mary, Ben has forgiven her, and she and Des have decided to move forward with the death retreat. The only nagging concern for Mary: her daughter Jess hates her and doesn't believe a word out of her mouth.

Mary makes a bold move to take Olivia down, but a set of unexpected circumstances give her pause as she discovers Olivia may not be the enemy at hand. Ben comes face-to-face with Mary's dark side, which sends him into a downward spiral.