The Two Chinatowns by Dan Mahoney (2001, Hardcover)

But while celebrating their future over dinner in Toronto's Chinatown, Sue is murdered by members of the street gang Born to Kill. Cisco vows revenge, and throws himself into the case of his life. Pursuing one of the killers, he begins to uncover the dangerous underworld of gangs in the two Chinatowns of Toronto and New York. A history emerges of kidnapping, extortion, drug smuggling, contract killing, and the transport of human cargo between China and North America...a criminal network more powerful than the Mafia and virtually unknown to all but the silent businessmen and frightened workers in Asian communities.

Following a trail that leads from Toronto to New York and finally to Singapore and Hong Kong, Cisco relentlessly closes in on the man ultimately responsible not only for his fiance's death, but the fates of thousands of others. Drawing on inside knowledge from NYPD and FBI sources, The Two Chinatowns offers terrific suspense, unparalleled investigative detail, and a look into the most secretive criminal organization in the world.

Industry Reviews
"[T]he main virtue of Mr. Mahoney's fine detective story is the strength of the illusion it sustains that things could have happened almost the way they happen in this book."
New York Times Book Review - Richard Bernstein (07/26/2001)