Family Plot contained one of the classic director-versus-actor reversals of the studio era's lingering tradition of absolute directorial authority. Roy Thinnes had already been cast as Arthur Adamson, the seemingly respectable jeweler who is secretly a kidnapper and murderer. About a month into filming, however, Hitchcock decided that Thinnes's performance was not working and removed him from the production. William Devane was brought in to replace him, forcing the film to absorb a major recasting after cameras were already rolling. The change was especially consequential because Adamson is one of the movie's central figures: the audience must accept his polished public identity while also watching him conduct elaborate kidnappings and arrange murders. Devane ultimately became the face of Hitchcock's final villain, while Thinnes's dismissal became one of the production's most striking examples of the director's willingness to sacrifice completed work rather than retain a performance he disliked.
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