When a troublesome former colleague reappears in their lives with a suspicious agenda, Sharon and Hy are targeted by a mysterious adversary who keeps secrets hidden in a house scheduled for demolition.

"Sharon McCone is hired to investigate the 22-year-old cold-case of a housewife and artist who vanished inexplicably in the central part of California"--Provided by publisher.

1890s San Francisco. Former Pinkerton operative Sabina Carpenter and her detective partner, ex-Secret Service agent John Quincannon, tackle two seemingly unrelated cases that are complicated by two murders and the interference of Sherlock Holmes.

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...

"The history of corruption may jeopardize Sharon McCone's marriage, but uncovering the secrets of a mysterious firm may be the only way she can save her husband's life, and her own"--Provided by publisher.

Conducting a dual investigation in the opium dens of San Francisco's Chinatown, Sabina Carpenter and John Quincannon search for missing millionaires against a backdrop of a brewing Tong war.

1894, San Francisco. A debutante's missing body, murder most foul, a Wells, Fargo robbery, and weird spectral lights in the fog make for a gaslight-era tale of mystery and detection.

When her father is left in a coma by a racially driven beating during the holiday season, private investigator Sharon McCone resolves to bring the attackers to justice, only to find herself targeted by hate-filled, racist threats.