The Heartbeat Hypothesis — Lindsey Frydman

Audra Madison simply wanted to walk in the shoes of Emily Cavanaugh, a free-spirited teenager who died too young. After all, Audra wasn't supposed to be here.

Thanks to Emily, Audra has a second chance at life. She's doing all the things that seemed impossible just two years ago: Go to college. Date. Stargaze in the Rocky Mountains. Maybe get a tattoo. You know, live.

Jake Cavanaugh, a photographer with mysterious, brooding gray eyes, agrees to help chronicle her newfound experiences. She makes him laugh, one of the only people who can these days. As they delve into each other's pasts â€" and secrets â€" the closer they become.

But she's guarded and feels like she can't trust anyone, including herself.
And he's struggling with the fact that his beloved sister's heart beats inside her.