A particularly maligned example of Italian cult cinema with a nonsensical title to boot (if anything, the alternate THE MARK OF Satan is even less relevant to the plot!), this hybrid of Gothic Horror and Giallo (with a strong dose of Erotica) only contrives a flat sort of atmosphere throughout – actually matched by handling which is downright dreadful! Here, we get the usual group of people (an acting troupe) stranded on an island (to which they were invited by a Count – since he had become enamored of the leading lady, a dead-ringer for his missing spouse)! The characters are pretty much stereotypes: middle-aged but dashing hero (played by Giacomo Rossi-Stuart and whose family history bears more than its share of violent tragedy), demure heroine, sluttish companion (recalling Mae West and emerging the most annoying of the lot!), a meek but devoted stage manager (forever chided by one and all for his unmanly behavior!), a couple of lesbians, a mysterious gardener (the ubiquitous Luciano Pigozzi who, for once, gets in on the action, if you know what I mean), an envious housekeeper (nominal star Femi Benussi though, for what it is worth, this is really an ensemble piece), a religious fanatic of a butler, an impressionable chambermaid, etc. While the film is not by any means unwatchable, the atrocious dubbing, snail's pace, shoddy production (with the scenes depicting the raging sea lifted from some black-and-white film!) and the fact that the murders only occur within the concluding half-hour do not help matters. Besides, Marcello Giombini's score, though pleasant in itself, comes off as incongruously modern under the circumstances; that said, the revelation proves a surprisingly elaborate one (considering there is surely no shortage of suspects here).