On November 28th, 1942, a busboy lit a match in a dark Boston basement lounge to find a light socket, then blew it out. Minutes later, 492 people were dead in the deadliest nightclub fire in history, though investigators later proved the match did not cause the inferno. We pull from fire reports, medical journals, and architectural blueprints to show how a single tragedy exposed mob corruption, wartime shortages, and greed, while revolutionizing fire safety and emergency medicine.

We walk through the Cocoanut Grove’s mob-tied history, its maze of flammable decor, locked and bricked-up exits, and the toxic methyl chloride pumped through its air conditioning because of a wartime freon shortage. We trace the panic at the jammed revolving door, the heroism and horror of that night, the flawed justice for owner Barney Welansky, and the decades-later theory that faulty wiring, not a match, ignited the blaze.

• How carbon monoxide trapped above a false ceiling flashed over into a fireball
• Why inward-swinging doors cost an estimated 300 lives
• The abandonment of tannic acid burn treatment for petroleum jelly and gauze
• How victims were among the first treated with experimental penicillin
• The building-code laws on outward-swinging doors and lit exit signs born from the disaster