The Intruder (1975)

Overview

A treasure-hunting expedition unfolds on a secluded island when eleven guests gather to hear a will. However, an ominous presence lurks among them, picking them off one by one. As tensions rise and paranoia sets in, the group grapples with the chilling realization that an unseen force is intent on their destruction. With each shocking death, the remaining guests are left to uncover the identity of their relentless assailant. The suspense builds to an explosive finale, revealing that the intruder holds a deadly secret that threatens to consume them all.