When Tillie Moore decides to host the town's first-ever Halloween pet costume contest, she hopes for a day filled with laughter, community spirit, and adorable animals in cute attire. As the event kicks off, she's overwhelmed by the turnout and the fantastic array of costumes that bring a warm glow to her heart.

But the joy is short-lived when the contest winner, Bobbie and his dog Mr. Cuddles, mysteriously disappears, only to be found dead under chilling circumstances. With the community in shock and fingers pointing her way, Tillie must step out of her comfort zone and into the world of amateur sleuthing.

Can she untangle the web of secrets and lies to find Bobbie's killer and clear her own name? Join Tillie on a thrilling, heartwarming adventure filled with twists, turns, and a parade of charming pets while trying to solve the murder.