Cruising (1980 DVD RIP)

West Village, Manhattan. A string of sadistic murders terrorises the regulars of the neighbourhood's underground S&M clubs. As a result, lured by the promise of rapid promotion, novice patrolman Steve Burns unwisely enters the shady world of an unspoken subculture. But some doors are best left closed. And with the sadistic serial killer still on the loose, Burns soon realises he has bitten off more than he can chew; in this dangerous alien underworld, ill-advised one-night stands lead to agonising death. Now, the high-stakes cat-and-mouse game threatens everything Steve holds dear, including his soul. When cruising for a killer, can one emerge unscathed?