a particularly maligned example of italian cult cinema with a nonsensical title to boot ( if anything and the alternate the mark of satan be even less relevant to the plot . ) and this hybrid of gothic horror and giallo ( with a strong dose of erotica ) only contrive a flat sort of atmosphere throughout actually match by handle which be downright dreadful . here and we get the usual group of people ( an act troupe ) strand on an island ( to which they be invite by a count since he have become enamor of the lead lady and a dead ringer for his miss spouse ) . the character be pretty much stereotype represent middle age but dash hero ( play by giacomo rossi stuart and whose family history bear more than it share of violent tragedy ) and demure heroine and sluttish companion ( recall mae west and emerge the most annoying of the lot . ) and a meek but devoted stage manager ( forever chide by one and all for his unmanly behavior . ) and a couple of lesbian and a mysterious gardener ( the ubiquitous luciano pigozzi who and for once and get in on the action and if you know what i mean ) and an envious housekeeper ( nominal star femi benussi though and for what it be worth and this be really an ensemble piece ) and a religious fanatic of a butler and an impressionable chambermaid and etc . while the film be not by any mean unwatchable and the atrocious dubbing and snail pace and shoddy production ( with the scene depict the rag sea lift from some black and white film . ) and the fact that the murder only occur within the conclude half hour do not help matter . besides and marcello giombini score and though pleasant in itself and come off a incongruously modern under the circumstance while that say and the revelation prove a surprisingly elaborate one ( consider there be surely no shortage of suspect here ) .