Then She Was Gone by Lisa Jewell

Ellie Mack seemed to have it all. At fifteen, she was the youngest of three, adored by her family, friends, and teachers, and part of a teenage “golden couple.” She was days away from a carefree summer vacation, with her entire future ahead of her.

Then, she vanished.

Now, ten years later, her mother, Laurel Mack, is still trying to rebuild her life. Seven years after her marriage ended and only months since the latest clue in Ellie’s case resurfaced, Laurel is cautiously moving forward. When she meets Floyd, an unexpectedly charming man in a café, she’s taken aback by how quickly their connection deepens. As their relationship grows, Laurel is introduced to Floyd’s daughters—and it’s his youngest, Poppy, who leaves her speechless.

Because looking at Poppy is like seeing Ellie again.

This uncanny resemblance forces Laurel to confront the lingering questions she’s spent years trying to ignore. Where did Ellie really go? Did she run away, as the police have always believed, or was there something darker at play? Who is Floyd, and why does his daughter remind Laurel so powerfully of her missing child?

The answers she thought she’d put to rest are about to come rushing back, and Laurel is about to discover how little she truly knows about the past.