In the newest novel in the USA Today bestselling series, Jessica Fletcher must diagnose a killer with a taste for bad medicine…

When her latest book tour brings bestselling author Jessica Fletcher to Tampa, Florida, she’s thrilled to learn that her travel plans overlap with those of her good friend, Cabot Cove’s own Dr. Seth Hazlitt.

Seth is in town visiting Alvaro Vasquez, a renowned physician he befriended while participating in a research program in Havana. Vasquez, who has defected from Cuba to Tampa, is developing a potentially groundbreaking cure for Alzheimer’s disease. If he’s successful, his American backers stand to make millions. But there is a growing fear that the drug may fall into the hands of a powerful pharmaceutical company.

Jessica attends a party at Vasquez’s lavish home, but the celebration ends abruptly when guests witness Vasquez seemingly struck by lightning. Jessica and Seth do some digging into the physician’s checkered past and learn that his death was no accident. As they work together to find a cure for the common killer, they become enmeshed in international intrigue involving the local police, the FBI, the CIA—and begin to wonder if they’ll ever see Cabot Cove again.