A local wine festival turns deadly when a football coach is found murdered. Mac and Millie, a beloved mystery-solving duo, find their autumn enjoyment shattered when a young assistant coach for the Geneva Vikings is discovered dead on the football field under peculiar circumstances. The night of victory quickly transforms into one of fright as they are drawn into a spooky and fun-filled investigation within the Fox River Valley.

The premise suggests a lighthearted cozy mystery with a touch of autumnal charm. The inclusion of a recurring duo implies a focus on character dynamics and established reader familiarity. The blend of a festival setting with a murder points to a plot that balances festive atmosphere with suspenseful investigation, likely appealing to fans of the genre seeking an engaging yet not overly grim read. The description highlights humor and a 'spooky and fun-filled foray,' indicating a tone that prioritizes entertainment and puzzle-solving over intense drama.