Sage Caplin has high hopes for her coffee cart, Ground Rules, which she runs with her business partner, Harley - a genius at roasting beans and devising new blends. That's essential in a city where locals have intensely strong opinions about cappuccino versus macchiato - especially in the case of one of Sage's very first customers....Sage finds the man's body in front of her cart, a fatal slash across his neck. There's been plenty of anger in the air, from longtime vendors annoyed at Ground Rules taking a coveted spot in the food truck lot, to protesters demonstrating against a new high-rise. But who was mad enough to commit murder? Sage is already fending off trouble in the form of her estranged, con artist mother, who's trying to trickle back into her life. But when Sage's very own box cutter is discovered to be the murder weapon, she needs to focus on finding the killer fast - before her business, and her life, come to a bitter end . . .