Everybody agrees that talented mom Patty Birch is the perfect president to lead the Carlton Central School PTA to new accomplishments. Under her steady stewardship, the organization verges on winning a prestigious award. Her skills, however, are sorely tested when angry board members assemble to discuss a secret video that reveals their pettiness and ineptitude. Not long after the meeting adjourns, Patty's tenure is cut short by a knife-wielding killer.

When Molly Masters, the town's unofficial sleuth, gets on the case, Perfect Patty turns out to be not so perfect after all. She not only instigated the notorious video but also some of its most humiliating episodes, many of which remain on the cutting-room floor. It's no wonder someone in PTA-land is ready to kill—and Molly is destined to be the next victim. . .