Good Spanish/Italian supporting cast is the highlight of this tolerable, but thoroughly unexceptional giallo. Opening with a true showstopper as an insurance investigator is decapitated with a piece of heavy machinery, this details an investigation into the death of a young girl. The killer keeps on killin' to conceal the crime. George Hilton coasts through his role as the head detective with a bare minimum of interest. Patty Shepard shows up briefly as a schoolteacher, and is given the bloodiest death scene. A bit on the tedious side and slips into the routine much of the time.