Stuart M. Kaminsky. Poor Butterfly (1990) 179 pp.
1942: Los Angeles private eye Toby Peters is called to San Francisco to do a job for the Metropolitan Opera. Leopold Stokowski is preparing to open Madame Butterfly amidst protesters who object to an opera that sympathetically portrays the plight of a Japanese woman abandoned by an American naval officer. After receiving a threatening note and the suspicious accidental death of a plasterer, Stokowski is convinced someone is set on sabotaging the performance. Peters investigates, falls for a soprano, gets framed for murder, and has to solve a couple more deaths before the show can go on
Hubin