As Lonesome Valley kicks off the holiday season with its annual parade, artist Amanda Trent embraces the Christmas spirit, happy that her family will be coming to town to celebrate the season with her and her loyal pets, Laddie, a friendly golden retriever, and Mona Lisa, an independent calico cat.

Amanda has just one nagging concern: her art sales have stalled, so her checking account is starting to look a bit puny. Her financial woes pale, though, in comparison to her concern when several people eat carrot bars laced with hemlock at the high school's arts and crafts fair, resulting in one unlucky man's death. Was the poisoning an accident, or did someone with evil intent deliberately spike the sweet baked goods?

Leads the police follow don't pan out until Amanda puts the puzzle together. But, sometimes, knowledge can be a dangerous thing. . .