Rebel Without a Claus — Zara Keane

Makeup. Mannequins. Murder.
When ex-cop-turned-P.I. Maggie Doyle scores a lucrative undercover job at the makeup counter at a fashionable Galway department store, she expects discounted lipstick and an easy paycheck.

After an altercation with a customer leads to a dead body in Maggie's bathtub, she and her assistant realize there's more to the department store case than missing cash. Can they catch the killer before the holidays? Or will the festive season end in an explosion of tinsel and turmoil?