After uncovering a surprising connection to their past, Michael (Michael Vlamis) and Isobel (Lily Cowles) learn the painful truth about the night Tripp (guest star Jason Behr) attacked their mothers. Meanwhile, Alex (Tyler Blackburn) confronts his father (Trevor St. John) about their troubled family history. Elsewhere, Kyle's (Michael Trevino) first date with Steph (guest star Justina Adorno) takes an awkward turn after Liz (Jeanine Mason) inadvertently becomes a third wheel.