Five Dolls for an August Moon

5.8
Overview
A wealthy playboy gathers a group of bourgeois friends at his isolated beach house for a weekend of relaxation. When bodies start pilling up, they realize they’re trapped with a killer in their midst, sending them in a frenzy to figure out who amongst them is killing the others before they are killed next.
Recommendation & Similar
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Danger: Diabolik (1968)
The House on Sorority Row (1982)
Kill, Baby... Kill! (1966)
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Hercules in the Haunted World (1961)
Fascination (1979)
Footprints on the Moon (1975)
Phantom of Death (1988)
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Dr. Goldfoot and the Girl Bombs (1966)
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The Unnaturals (1969)
Juliet, Naked (2018)
Basic Instinct 2 (2006)
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Anchorman 2: The Legend Continues (2013)
Friday the 13th (1980)
Ghostbusters II (1989)