The day this was written, Hannah Harper announced that she and Sin City were amicably parting ways after three years. While Sin City will be releasing a few more Harper titles in the coming months, Dementia 4 certainly serves as a noteworthy swan song for the breathtaking blonde Brit.

Adorned in high-end fetish fashions and accouterments throughout, Harper and the rest of the A-list female cast engage in some memorably nasty fucking in a high-end property, captured handsomely by director Jim Powers? first-rate, sometimes beautifully striking camera work, wrapped inside vignettes concerning wife swapping and mind fucking that, to be real here, don't always make perfect sense. Dementia indeed.

But in porn, the sex is the thing, and here there's plenty for your customers – notably singles and couples into kinky couture – to get off on.

Dementia 4's sexual centerpiece is a prolonged d.p. six-way in which Harper, Sasha Knox and Gia Jordan undergo full body cavity searches care of three cops (Alex Sanders and two compatriots) and a torpedo-sized dil, with a little choking (hey, they are pigs) and rimming thrown in for good measure

Also stroke-worthy are the Harper/Annette Schwartz/Lee Stone closer – Hannah poured into a full body blue latex jumpsuit is worth the price of admission all by its lonesome – and earlier, another threeway, this one with a briefly mummified Harper, the trash-talking, metallic-strap-on-sporting Taryn Thomas and Van Damage. It climaxes with Van the Man blowing his ball butter deep into Taryn's turd cutter, she felching it out onto Hannah's hungry tongue and the two girls then swapping it mouth to mouth. Watching someone as stone-cold gorgeous as Harper engaging in such base, vile acts is definitely a died-and-gone-to-porno-heaven experience. Good show, girl.

Pre-noms: Best All-Sex Release; Best Group Sex Scene, Hannah Harper, Sasha Knox, Gia Jordan, Alex Sanders, others; Best Videography, Jim Powers.

Retailing: Nasty enough for some solo strokers, handsome and story-oriented enough for some couples. Stock in both general new releases and your fetish section.