When Heather Shepherd arrives at Amy's boyfriend's house, the last thing she expects to find is Kent unconscious and a new murder to solve. But that's exactly what happens, and things only get worse when it's revealed that Amy is the prime suspect and Kent has amnesia. With nothing but her Rhubarb Frosted donuts and her keen sense of adventure, she determines to solve the case before the killer can strike again. But the closer Heather gets to the truth, the worse Amy's behavior becomes - her paranoia is at an all-time high. And Ryan, her detective husband is adamant that Heather absolutely must not get involved this time because this case is too close to home. Heather must choose: delve into the donut hole or leave this case as uncooked batter - either way, there's a mystery to sleuth, and this one is the trickiest so far.