As Lake Eden's Harvest Festival sends The Cookie Jar into pumpkin spice mania, Hannah splits her focus between scrumptious treats and sharing her tiny condo with new roommates: Norman Rhodes and his cat, Cuddles. It's an awkward but necessary solution after Norman's dream farmhouse burned down over the summer, torched by a criminal desperately trying to conceal a terrifying secret . . .

No one has a clue about the arsonist, the body found among the ruins, or the old class ring from a local high school partially melted by the flames. But when a celebration leads to the discovery of another murdered graduate, Hannah realizes someone might be seeking violent revenge against former classmates--and must whip up a last-minute plan to find out who . . .

Now, with the help of her family, it's on Hannah becomes a makeshift event planner to arrange an all-class alumni party at the school gym and tempt a vicious killer out of hiding. But if the true culprit RSVPs, can Hannah blow their cover and still live to slice another chiffon pie?