And Then There Were None (1974)

In the 1974 film "And Then There Were None," ten individuals receive invitations to a remote hotel in the Iranian desert. As they settle in, they soon realize that a mysterious assailant is systematically eliminating them one by one. Paranoia sets in as they begin to suspect that one among them may be the very killer they seek, leading to a tense atmosphere filled with mistrust and impending doom. With each murder, the stakes rise, and the survivors must race against time to uncover the truth before it's too late.