Desc: Six Locked Doors: The Legacy of Cocoanut Grove: Directed by Zachary W Graves-Miller. With Paul Christian, Kevin Cullen, Ray Flynn, Rikki Klieman. Six Locked Doors explores the events leading up to the deadliest nightclub fire in American history on November 28, 1942 at the Cocoanut Grove nightclub in Boston, Massachusetts, and the ensuing consequences of a tragedy that left 492 people dead.