Thirty-one nights. Thirty-one chapters. One final nightmare.

Last Halloween, thirty trick-or-treaters vanished into the night.

This October, they're coming back-one by one, each day of the month. But every child carries the same chilling warning: something is returning on the 31st.

Bob has never stopped searching for his daughter. Now, as the shadows of Halloween grow longer, he must face the darkness that stole her-before it takes everything again.

The 31st Trick-or-Treater is a Halloween advent novel: thirty-one nights, thirty-one chapters, and one final nightmare waiting on Halloween.