A high-tension psychological thriller by Freida McFadden that traps its characters in an isolated cabin during a violent hurricane.

Casey is riding out the storm alone in her remote wilderness cabin when she notices a young woman standing outside her kitchen window. The stranger is soaked by the rain, covered in blood, and clutching a knife—but refuses to explain who she is or what happened.

Against her better judgment, Casey lets the girl inside. As the storm worsens and escape becomes impossible, unsettling discoveries reveal that the mysterious visitor is hiding a deadly secret. With no phone service, no help nearby, and the hurricane cutting them off from the outside world, Casey must determine whether the stranger is a victim, a murderer, or something even more dangerous. Every revelation raises the stakes, turning a simple act of kindness into a desperate fight for survival.

Featuring McFadden's trademark short chapters, relentless pacing, and shocking twists, The Intruder is a claustrophobic survival thriller that explores trust, fear, trauma, and the lengths people will go to protect themselves.