Nikki Sands is exactly where she wants to be as the Manager of the Malveaux Estates in Napa Valley-and "shacking up" with the owner, her boyfriend Derek Malveaux. But she starts to lose control when some self-helpers arrive and steal her peace of mind... Nikki couldn't be happier settling into the vineyard with her boyfriend Derek. But when a self-help guru and his followers check into the winery's boutique hotel and spa for a retreat, she feels far from enlightened as she's forced to take on the role of event coordinator. The group's first outing on the famous Napa Valley Wine train reinforces Nikki's doubt in the guru when one of his followers goes missing. The guru's devotee is found in the wine storage car where someone quite literally-and fatally-put a cork in him. It isn't long before Nikki and her best friends Simon and Marco are back at their sleuthing and it's up to Nikki to stop a killer who's developed a real taste for murder...