Clare Cosi's new friend, millionaire David Mintzer, has an offer no New York barista could turn down: an all-expenses-paid summer away from the sticky city. At his Hamptons mansion, she will relax, soak up the sun, and, oh yes, train the staff of his new restaurant. So Clare packs up her daughter, her former mother-in-law, and her special recipe for iced coffee for what she hopes will be one de-latte-ful summer.

Soon, Clare tends the coffee bar at her first Hamptons gala. But the festivities come to a bitter end when an employee turns up dead in David's bathroom—a botched attempt on the millionaire's life. Thanks to the Fourth of July fireworks, no one heard any gunshots, and the police are stuck in holiday traffic. Concerned for everyone's safety, Clare begins to investigate. What she finds will keep her up at night—and it's not the java jitters.