Kill the Crazy by Lucy Carol

In a tranquil spa for the wealthy, candlelit massages, waterfall pools, and flowing wine should add up to the ultimate relaxing day. But Madison Cruz soon finds hidden agendas and danger. A catacomb of hallways and a tangled web of motives hints at madness beneath the sophisticated veneer of the spa. Meanwhile, Madison's FBI mother and KGB grandmother are still learning how to get along after trying to outshoot each other. As if that weren’t enough, now Jason’s evil ex-girlfriend thinks Madison stole her man, and the wine is flying! Hiding out in the supply room isn’t helping — not with Jason trying to help himself to Madison's charms. As much as she’d like to return his attentions, she’d better stay alert to the danger just outside their door. Things are about to go from dangerous… to deadly.

"Madison is at it yet again. The insanely funny group from Hot Scheming Mess decide to "relax" and get to know each other better at a day spa…" -Amazon Customer