Watch Upstairs Inferno (2015) HD Full Movie Free on solarmovie.do. Watch Upstairs Inferno (2015) online free. On June 24, 1973, a gay bar in New Orleans called the Up Stairs Lounge was deliberately set on fire:...On June 24, 1973, a gay bar in New Orleans called the Up Stairs Lounge was deliberately set on fire: an event that for over 40 years, was considered the "Largest Gay Mass Murder in U.S. History".