Conducting a dual investigation in the opium dens of Chinatown, Sabina Carpenter and John Quincannon search for missing millionaires against a backdrop of a brewing tong war. By the award-winning authors of The Bughouse Affair.

For the firm of Carpenter and Quincannon, Professional Detective Services, stopping extortionists is not only grand, but excitingly lucrative.When a pleasant afternoon's bicycling through Golden Gate Park with a friend ends with the revelation of threatening letters, followed by a gunshot in a mansion garden, Sabina Carpenter knows this is a case that demands her immediate and undivided attention.The questions her partner John Quincannon has to unravel...

"Despite the fact that his wedding is right around the corner, John Quincannon takes on what may be his riskiest assignment: going undercover into a gold mine to ferret out a gang hijacking high-grade ore before it reaches the surface ... John discovers the clever methods by which the scheme is being worked and exposes the conspirators ... following him leads to an unexpected rendezvous with Sabina, who has uncovered vital information about the thief's...