The 8TH Confession by James Patterson and Maxine Paetro.   (jacket missing)
As San Francisco's most glamorous millionaires mingle at the party of the year, someone is watching, waiting for a chance to take vengeance on Isa and Ethan Bailey, the city's most celebrated couple. Finally, the killer pinpoints the deal moment, and it's the perfect murder. Not a trace of evidence is left behind in their glamorous home.