Ruthless Skuespillere og folkene bag
Zachary ScottHorace Woodruff 'Woody' Vendig Diana LynnMartha Burnside / Mallory Flagg Sydney GreenstreetBuck Mansfield Lucille BremerChrista Mansfield Martha VickersSusan Duane Edith BarrettMrs. Burnside Charles EvansBruce Endicott McDonald Robert J. AndersonHorace Vendig as a Child Arthur StoneVic Lambdin as a Child Ann CarterMartha Burnside as a Child Frederick WorlockJ. Norton Sims Harry CheshireLawyer Nevin (Uncredited) Douglas EvansGeorge (Uncredited) Jesse GravesPhillips, Mansfield's Servant (Uncredited) Sam HarrisMan in Office (Uncredited) George McDonaldFreddie Atwood (Uncredited) Bert MoorhousePrescott (Uncredited) Fred NurneyMrs. Vendig's Lover (Uncredited) Dick RyanServant (Uncredited) Larry SteersPolitical Dinner Dais Attendee (Uncredited) Joseph JustmanAssocieret producer Frank Paul SylosArt Direction Bert GlennonDirector Of Photography Robert LittlefieldMakeup Artist Marty MossAssisterende instruktør Shirley UlmerSupervisor for manuskript Francis D. LyonFilmklipper Werner JanssenKomponist af original musik Max M. HutchinsonSound Director Paul DessauMusic Supervisor Barbara CanterburyCasting 
