Investigators who infiltrate a criminal organization but are detained by their identity-and endless torture is repeated! A collection of 4 films that "Gold powder slave investigator", "Black shock", "Devil's prey", "Brainwash intruder", Yui Hatano appeared as an investigator and appeared! Yui dressed in a black suit dives into the organization of evil and there are a number of indecent torture you receive as a prisoner ...