Opera singer turned murderer in the Destiny story of comic book Police Comics
#27 (February 1944). What plot there is is swiped from the Phantom of the Opera. Tassi was a great tenor who disappeared about a year previously. His career slipped, and he blames the other opera singers, so he's sneaking onstage and murdering them. He murders singer Ricardi
, his fourth murder. Hero Destiny chases him down and confronts him. A rooftop chase causes Tassi to slip and fall to his death.