Five Dolls for an August Moon ratings (Movie, 1970)

George Stark is a wealthy industrialist who invites five business friends of his to his remote Mediterranean island for a weekend of relaxation and business when he introduces them to Professor Farrell, a brilliant chemist who gives investment ideas to the group. But against Farrell's wishes, the group goes behind each other's back to obtain information on Farrell's chemistry ideas and soon the guests and residents start turning up dead one by one as Stark and Farrell must rally the group together to determine the identity of the killer (or killers) despite nobody trusting anyone.

The Last House on the Left
Total votes: 42,007
Average rating: 5.8 Sisters
Total votes: 22,201
Average rating: 6.9 The Legend of Hell House
Total votes: 14,701
Average rating: 6.7 The Cat o' Nine Tails
Total votes: 13,679
Average rating: 6.6 A Bay of Blood
Total votes: 13,677
Average rating: 6.5 Horror Express
Total votes: 13,640
Average rating: 6.5 The Devil Rides Out
Total votes: 10,871
Average rating: 6.9 Four Flies on Grey Velvet
Total votes: 10,489
Average rating: 6.5 Asylum
Total votes: 8,661
Average rating: 6.5 Torso
Total votes: 8,556
Average rating: 6.5