Loft (2008)

Five guys sharing a sexy secret suspect one of them is a murderer in Loft (2008). Five married men, friends since childhood, decide to rent out a loft apartment where they take their mistresses for a little extramarital hanky panky. But their bubble is burst the morning when the body of a naked woman is found dead in the apartment. Only the five guys renting the place have keys to the titular loft, so one of them must be the culprit...right? Spankfully the majority of the nudity in Loft is of the living variety, including bare buns from Marie Vinck and Veerle Baetens. Baetens? Don't mind if I spew!