Minor Wife by Christopher G. Moore

A contemporary murder set in Bangkok—a neighbor and friend, a young ex-hooker turned artist, is found dead by an American millionaire’s minor wife. Her rich expat husband hires Calvino to investigate.

While searching for the killer in exclusive clubs and not-so-exclusive bars of Bangkok, Calvino discovers that a minor wife—mia noi—has everything to do with a woman’s status. From illegal cock fighting matches to elite Bangkok golf clubs, Calvino finds himself caught in the crossfire as he closes in on the murderer.