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Killdozer (1974)

IMDb: 5.1
1974

A small construction crew on an island is terrorized when a spirit like being takes over a large bulldozer, and goes on a killing rampage

The Motive (1958)

IMDb: 8.1
1958

A man who has a theory that, murders committed without a motive are very rarely solved, is coaxed by his friend into killing someone