A storm-struck island, a blood-soaked bed, and a missing man lead Senior Investigator Shana Merchant to suspect a killer is among them—murder may be a family affair. Thirteen months after surviving an abduction by a serial killer, Shana seeks a fresh start in her fiancé's quiet hometown in Upstate New York. However, as a nor'easter approaches, she and fellow investigator Tim Wellington are called to a private island owned by the wealthy Sinclair family to investigate a missing person. Upon arrival, they find blood at the scene and a tense atmosphere among the Sinclair family and their guests. While Tim believes it may be a runaway case, Shana is convinced they are dealing with murder. As the storm rages outside, she conducts interviews and uncovers dark secrets among the Sinclairs and their visitors. Trapped on the island with unreliable allies, restless suspects, and her own traumatic memories, Shana must learn to trust herself again. With time running out, she realizes that if her instincts are correct, a killer is close by, and the risk of another strike increases as pressure mounts.
