The Cabin by Natasha Preston

A New York Times Bestseller There may only be one killer, but no one is innocent in this thriller from Natasha Preston, the New York Times bestselling author of The Cellar and The Cabin A weekend partying at a remote cabin is just what Mackenzie needs. She can't wait to let loose with her friends. But a crazy night of fun leaves two of them dead--murdered. With no signs of a forced entry or struggle, suspicion turns to the five survivors. Someone isn't telling the truth. And Mackenzie's first mistake? Assuming the killing is over. . .