Jesse W. Haywood (Don Knotts) graduates from dental school in Philadelphia in 1870 and goes west to become a frontier dentist. Penelope "Bad Penny" Cushing (Barbara Rhoades) is offered a pardon if she will track down a ring of gun smugglers. She tricks Haywood into a sham marriage as a disguise. Haywood inadvertently becomes the legendary "Doc the Haywood" after he guns down "Arnold the Kid".
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The Shakiest Gun in the West is a 1968 American comedy Western film starring Don Knotts. It was directed by Alan Rafkin and written by Jim Fritzell and Everett Greenbaum. The film is a remake of The Paleface, a 1948 film starring Bob Hope and Jane Russell.