Serum obtained from a brain after a mass murder transforms the good Dr. Jekyll of London into the evil Mr. Blood.
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The Mechanic is a 1972 American action thriller film directed by Michael Winner from a screenplay by Lewis John Carlino. It stars Charles Bronson, in his second collaboration with Winner, and Jan-Michael Vincent in the leading roles. The supporting cast features Keenan Wynn, Jill Ireland and Frank de Kova.