Mouth watering Misty Rain is delightfully bubbly and as easy on the eyes as ever as the hostess of this sexual travelogue set against the backdrop of an adult trade show in Barcelona.

The trade show footage, meanwhile, is extremely entertaining as well as eye opening. This being sexually freer Europe, the adult luminaries such as Sophie Evans actually have full-on intercourse on stage in front of the convention multitudes. Don't hold your breath waiting for that to happen at the next AEE or ECVS.

WWS4's five sex scenes, alas, are the weak links in all this frivolity.

Though by and large well energized, the two couplings and three threeways are on the whole fairly generic and ho-hum. Rain, who's given us all so much pleasure over the years in front of the camera, quite obviously still has a thing or two to learn about giving pleasure from behind the camera.

Even so, the trade show stuff is enjoyable enough to warrant giving WWS4 a marginal above-average recommendation.