Another garish "color krimi" from director Alfred Vohrer who splits the action between a girl's school and a men's prison this time. Bumbling Scotland Yard Commissioner Sir John and his flirtatious secretary are back from CREATURE WITH THE BLUE HAND (along with the annoying MANNIX- style soundtrack during the "action" sequences) but the Inspector's been replaced by a smarmy, gum-chewing dick up to his ass in dead bodies.
It's impossible to figure out whodunnit in these Edgar Wallace "inheritence thrillers" since surprise revelations come fast and furious at the end when all the suspects are gathered together a la Agatha Christie. There's usually a Mabuse-like mastermind behind it all and all you have to do is pick out the one least likely to be the madman and there you are. Here, the killer's known as "The Red Monk" and runs around in a red Ku Klux Klan sheet with a pointy hood offing his victims with a bull whip. That's not the only murder weapon, of course, and I quite liked a bible that, when opened, shoots poison gas in a girl's face. Sir John makes mention of a previous adventure, "the case of the sinister monk", which I haven't seen. I must say, however, that this one did have at least a modicum of stye but Germany must have lagged behind the "mod revolution" already in full sway by 1967; there's go go boots and bubble hairdo's, yes, but the mini-skirts are almost knee-length and the girls wear two-piece swimsuits instead of bikinis. Everyone else is strictly squaresville.
