It's the spookiest night of the year and the prehistoric tricksters of the bestselling What the Dinosaurs Did series have one goal—stocking up on candy!

Who's that knocking on your door? It may look like a skeleton, or a ghost, or a wolfman, but watch out—it might be DINOSAURS. The dinosaurs are after your candy, and they're willing to go to outrageous lengths to get it. Be careful! If they don't get their treats, things could get tricky...

Don't miss the dinosaurs' other misadventures!

What the Dinosaurs Did Last Night: A Very Messy Adventure

What the Dinosaurs Did at School

What the Dinosaurs Did the Night Before Christmas