Living with the dead by Kelley Armstrong
The plot of Living with the dead revolves around the character of Robyn; recently widowed she has moved to LA and taken a job in PR with Portia Kane, a Paris Hilton-type celebrity. Or wannabe celebrity. But when Portia is murdered Robyn finds herself the main suspect and in her confusion makes a break for it. She is helped out by her best friend, Hope Adams, and her boyfriend, Karl Marstsen.