Four boys who call themselves the Black Dinosaurs dig up a mysterious box of bones in this first book of the classic chapter book series by award-winning author

Ziggy and the rest of the Black Dinosaurs are thrilled to find out that there is a tunnel under their school that was once used by the Underground Railroad, and

Cass and her best friends, Lex and Nicholas, are the Bubble Street Gang! They investigate crimes, solve mysteries and have brilliant adventures. They've even go

Copyright date 2006, published as #5 in the Ziggy and the Black Dinosaurs series.

After their counselor told them a story about spirits in the woods near their campsite, Ziggy and his friends get lost in that very place.