Thinnes had already shot several scenes for the film when Devane suddenly became available .
Thinnes was cast in Alfred Hitchcock 's 1976 film Family Plot in the role of nefarious jeweler Arthur Adamson when Hitchcock 's first choice , William Devane , was unavailable .
Thinnes had already shot several scenes for the film when William Devane suddenly became available .
Thinnes was cast in Alfred Hitchcock 's 1976 film Family Plot in the role of nefarious jeweler Arthur Adamson when Hitchcock 's first choice , William Devane , was unavailable .