There exist two types of Italian gialli. The coolest type of giallo handles about masked psycho-killers with black gloves butchering people - preferably pretty young models - with sharp objects. The slightly duller but usually more stylish type of giallo handles about convoluted murder conspiracies complete with sexual intrigues, betrayal and triangular relationships. "The Flower with Petals of Steel", belongs in the second category. Even though the plot is wild and wickedly far-fetched, the film contains too many dull moments. The story revolves around Dr. Valenti. Although a busy surgeon, Dr. Valenti still has time to entertain several mistresses. He accidentally murders one in his apartment, with a hideous type of plant-statue, but is cold-blooded enough to professionally dissect her corpse and make it disappear. The girl's sister (played by giallo-regular Carroll Baker) and a sly homicide inspector are on the doctor's tail, and then he's also getting blackmailed. The film has one or two unforgettable sequences (most notably a lesbian scuba-diving highlight) and the bizarre plot is intriguing enough to keep you gazing at the screen until the finish, but overall it's disappointing and not at all recommended to anyone (except giallo-completists)