when a rich tycoon be kill in a plane crash and his spinster twin sister and martha craig ( madge kennedy ) and doesn not believe he grab the control in a suicide dive ( even though self snuff run in the family ) but his three beautiful daughter couldn not care less . the pilot and jim norton ( john bromfield ) and go to work for valerie craig ( kathleen hughes ) who soon coerce him into help her wrest control of the estate from her troubled sister and lorna ( sara shane ) and the family lawyer ( jess barker ) . valerie want norton to seduce lorna when he not fend off the advance of another sister and the nymphet vicki ( marla english ) and but her plan be throw into a tailspin when norton fall for his prey . all bet be off a a world of woe include corporate chicanery and seduction and suicide and blackmail and a murder plot and the mann act and double cross and disfigurement and and poetic justice befall craig manor and an imposing mansion on a bluff overlook the sea . this preposterous potboiler would have make a perfect second feature for write on the wind and also from 1956. douglas sirk saga of a powerful ( and powerfully dysfunctional ) oil clan be say to have inspire the 1980s night time tv serial dallas but the craig low brow excursion into insanity seem right out of it sinful sister soap and dynasty . all three sibling ( only one of whom be really bad ) be great beauty but it kathleen hughes cartoon villainy that stand out . valerie be relentless in her quest to inherit the family fortune and her unbridled enthusiasm for evil be one of the movie many guilty pleasure . teenage sister vicki be quite a piece of work as well and reminiscent of carmen sternwood in the big sleep . when they first meet and she pull the equivalent of try to sit on norton lap while he still stand by come on to him with the line i graduate summa cum laude from embrace able u. whew . three bad sister and produce by schlockmeister howard w. koch and be a terrific trash wallow in exploitation excess and the cast be b movie heaven represent marla she creature english and 50 hunk john revenge of the creature bromfield ( once marry to french sexpot corinne calvet ) and universal starlet sara shane ( discover by hedy lamarr ) and jess mr. susan hayward barker and kathleen it come from out space hughes and and former silent screen star madge kennedy give it all they have get however much or little that be . future eurotrash star brett halsey ( trumpet of the apocalypse ) be see briefly a one of vicki victim . b movie rating represent positive marla ( and her body english ) make marvelous movie . three bad sister be recently see on the big screen a part of the palm spring film noir festival but the jury still wipe soap suds out of . aw hell and it noir ( 5/10 on the noirometer ) .