Who Killed Doc Robbin? A group of people find themselves trapped in a creepy mansion, complete with secret passageways, a mad doctor and a murderous gorilla. Details Casts Galleries Posters Title Who Killed Doc Robbin? Release Date 1948-04-09 Runtime 00 Hours 55 Minutes Genres Comedy Crime Family Production Companies Unknown Production Countries United States of America Larry Olsen... William 'Curley' Benson... Eilene Janssen... Betty... Peter Miles... Dudley... Ardda Lynwood... Ardda... Dale Belding... Speck Jones... Virginia Grey... Ann Loring... Don Castle... George - Defense Attorney... George Zucco... Doc Hugo Robbin... Paul Hurst... Jailer... Whitford Kane... 'Fix-it' Dan Cameron... Wilton Graff... Prosecutor... Claire Du Brey... Housekeeper (as Claire Du... Rene Beard... Dis (as Renee Beard)... Donald King... Dat... Grant Mitchell... Judge... Steve Carruthers... Reporter (uncredited)... James Conaty... Bailiff (uncredited)... William Forrest... Reporter (uncredited)... Charles Gemora... Gorilla (uncredited)... Allen Mathews... Motorcycle Cop (uncredite... Frank O'Connor... Squad Car Cop (uncredited... William Ruhl... Homicide Squad Inspector ... Marshall Ruth... Police Sergeant (uncredit... Brick Sullivan... Officer Calladay (uncredi... Original Size (3840x2160) Original Size (2099x1180) Original Size (746x1136) Original Size (500x750) Original Size (1175x1763) Original Size (900x1350)