Hollis Brannigan, personal shopper at a prestigious Los Angeles concierge service, is assigned to Hollywood's fading stars, aging insiders, and D-list clients, but has her sights set on a position in the company's investigations department. To hone her investigative skills, she takes on discreet investigations for fellow employees—as long as upper management doesn't find out what she's up to.

Hollis becomes embroiled in a murder when she walks into one of L.A.s upscale consignment shops and discovers a young woman on the floor, draped in designer gowns. When Hollis rushes to give aid, another woman shows up and snaps her picture kneeling over the body. With her photo, her fingerprints, and her DNA at the crime scene, Hollis is now the prime suspect. To clear her name, she must find the killer.

While trying to keep her clients happy, keep her job, and prove her innocence, Hollis takes on a case investigating a cheating boyfriend whose mysterious midnight trips all over Southern California confound her. She finally gets a lead on her sister who vanished without a trace, but fears she'll disappear again before Hollis can get to her.

Now shopping for a killer in L.A.'s most exclusive stores and luxury shops, Hollis discovers revenge, deceit, and ambition turned deadly. A cunning murderer lurks nearby plotting another crime—this time against Hollis.

She soon learns that pursuing a murderer and discovering the truth about her sister aren't what she bargained for!