Inspired by a real couple, this rather ghastly horror depicts the lives of "Michel" (Laurent Lucas) and "Gloria" (Lola Dueñas). Initially they just hookup for some unbridled passion. Now he has an habit of imitating the Black Widow spider when he's done, but she manages to convince him that she would make for a far better procurement assistant. What now ensues are an increasingly graphic and outlandish series of crimes as a selection of vulnerable women fall prey to their antics. What nobody quite plans for, though, is that jealousy is going to rear it's ugly head. She is falling in love, he is not. A clash is looming, and a bloody and violent one at that. It starts off strongly this, with a degree of palpable menace that is intriguing to watch. Sadly, though, neither the acting nor the writing can sustain the sense of threat and the scenarios become a little too predictable, melodramatic even. By the last twenty minutes, the hysteria begins to grate and I sort of lost interest. At times there is some potently grim humour, and do keep an eye on the superior performance from Héléna Noguerra as "Solange" but otherwise, this is all just a bit underwhelming.