"An annual backpacking trip has deadly consequences in a chilling new novel from the bestselling author of The Lost Night and The Herd. Emily is having the time of her life--she's in the mountains of Chile with her best friend, Kristen, on their annual reunion trip, and the women are feeling closer than ever. But on the last night of their trip, Emily enters their hotel suite to find blood and broken glass on the floor. Kristen says the cute backpacker...