Having newly remembered a family tragedy, Cadence convinces the Liars to tell her about the aftermath. Mirren confides in her about an encounter with a crush gone awry, while Johnny remembers a rival's unwelcome visit to Beechwood. Gat has no choice but to recount a painful turn in their relationship – one that threatened their long-standing friendship and their potential new romance. And they all bore witness to brewing tension between the aunts, Carrie, Penny, and Bess. But as they tell their stories, at least one of The Liars is hiding something from Cadence, fueling her suspicions that last summer's pivotal trauma may not have been an accident after all.