Partner in Crime by J.A. Jance

In this chilling novel, the prolific Jance successfully brings together her dyspeptic Seattle homicide detective J.P. Beaumont (Birds of Prey, etc.) and Cochise County, Ariz., Sheriff Joanna Brady (Paradise Lost, etc.). When artist Rochelle Baxter is murdered in Bisbee, Ariz., Brady's department is stunned that Baxter's next of kin is not a person but the Washington State Attorney General's Office. Baxter was Latisha Wall, an industrial whistle-blower in a Washington witness protection program pending her testimony at an important trial. Beaumont, now an investigator for the AG, is sent to Arizona to determine if Wall's cover was blown.