Watchtower

Serial murderer Art Stoner (Tom Berenger) kills a professor who was planning to vacation at a remote lighthouse in Oregon. Stoner assumes his victim's identity and moves into the lighthouse himself. There he meets Mike O'Conner (Tygh Runyan), a young man with a checkered past, whose caring older sister, Kate (Rachel Hayward), helped him get a job looking after the lighthouse. Posing as the professor, Art gets close to the siblings, but all the while he secretly plots his next kill.