As Emma, Ethan and Thayer continue to search for the truth of what happened to Sutton at the lake, they follow a lead that raises more questions than it answers. But when a poorly-timed encounter threatens to expose her identity, Emma is left in a precarious position that turns her life upside down. Will she be able to recover? Meanwhile, Laurel impresses the crowd at her mom's charity benefit with her musical talents, and Rebecca and Alec get to know each other better.

Ethan insists on helping Emma get the answers she's looking for about her twin sister. So when a tattoo sparks a memory about Sutton, Ethan pursues an explanation. But the information proves costly when Ethan heads into a situation that quickly gets out of control. Meanwhile, Mads sneaks off to see Ryan, and Laurel continues to see Justin against her parents' wishes.