"San Francisco, the twentieth century: In 1939, a private detective searches for a missing heiress. In 1969, twin brothers approach a drug heist from opposite sides of the law. And in 1999, a woman slowly comes to realize the terrible danger she faces in her own home. [A] riveting tale of murder, love, crime, friendship, betrayal, and just the slightest bit of time travel" -- from publisher's web site.