Although the filming is inept and the post-facto addition of a framing device is disorientingly clumsy, this picture slowly reveals itself to be a fascinatingly repellent “roughie” (or perhaps a “ghoulie”). Mama Lupo’s dungeon sequences feature naked writhing bodies in bare rooms being whipped and prodded with nasty instruments, not unlike the “Olga” series or the Findlay’s “Flesh” cycle. For equality’s sake, the grotesque Mama herself gets to strip down for action, as does a corpulent “shiek” availing himself of the girls’ services (Mama must have really trained them well to go for this guy). At times the dialogue is played for laughs, but the melodramatic elements unravel with conviction. As they say, “they don’t make ’em like this anymore”. I was surprised to find this typical porn film of the ’60s in a 1975 revamped hardcore version -titled THE INVITATION in a separate IMDb entry, notable for the convincing integration of the added footage. If you have the slightest interest in this junker, it is worth seeking out the “new, not so improved” edition. Running 79 minutes, compared to original’s 71, film retains its hardboiled storyline, gross-out torture motifs and generally sordid atmosphere. But the hardcore material provides the target viewer with at least the usual accoutrements of masturbation-inducing material.
It is buried on a megaset of ’70s porn issued on DVD by Alpha Blue Archives and worth seeking out as such. For the dirtier version, the writer/producer/director credit is given to one “Trygge Rone”, actually film’s actor Jim Gentry, while the original helmer was Kurt Richter.