It’s night in London’s East End. A broken-down Warehouse is a venue for a private jazz gatherings. Rodney Hamilton a wealthy Playboy and jazz lover, throws a party for famous band leader Aurelius Rex and his wife Delia Lane, in celebration of their first wedding anniversary.
Delia, who has given up her successful singing career to marry Rex wants to surprise her husband with a new song that she has secretly rehearsed with Rex’s close friend and tour manager, Kass. Troubled star drummer, Johnny Cousin ruthlessly turns the evening’s events to his own advantage.
Triggered by Delia’s refusal to sing in his own band and his jealousy of Rex’s career, Johnny gets them to spin a web of intrigue. Convincing Rex, with great skill, that Kass is having an affair with his wife. His plot leads to murderous results.