"Emotionally eviscerating. A gripping examination of the barbed-wire bonds between sisters that cut, protect, and don't let go. Prepare to feel." --Stephanie Garber, New York Times bestselling author of Caraval "A masterfully written tale of survival, sisters, and love." --Julie Murphy, author of the #1 New York Times bestseller Dumplin'

Emma did something terrible to her sister. Something that cannot be undone.

Emma and Henri were supposed to grow old together. They were sisters and best friends. Emma always imagined them as little old ladies living together in a huge house by the sea.

But that was before--before the boat accident, before Emma and Henri washed ashore, before they got mixed up with Alex, a boy they barely know. The island is beautiful, but there is no fresh water, no food, no shelter. All they have are each other. And their secrets.

As nights on the island turn into days, Emma hopes the need to survive, the desperation for comfort, will drive Henri back to her. Instead they're farther apart than ever. And Emma finds herself drifting closer to Alex--Alex, who can't understand why Henri is so terrible to Emma. But then, he doesn't know Emma's secret.

Will Henri ever forgive Emma? Can they survive the island? Can they reclaim what they've lost? There is no map for this.

A twisting tale of loyalty, betrayal, and hope--for fans of Tell Me Three Things, The One Memory of Flora Banks, and Pretty Little Liars.

"Top-notch--readers will be riveted." --Publishers Weekly
"If you enjoyed the twisty suspense of We Were Liars, you'll rip through [this]." --PopSugar
"A must-read." --HelloGiggles
"A heart-stopping page-turner." --Jennifer Mathieu, author of The Truth About Alice
"A unique glimpse at emotional and physical struggles." --SLJ
"Harrowing." --Stacey Lee, author of Under a Painted Sky
"Beautifully told." --Buzzfeed
"Will suck you in from the first page." --Brightly