The Dinosaur Detectives: In The Rainbow Serpent (Book 4)

Follow Matt Sharp and the Dinosaur Detectives as they explore the world and hunt for dinosaur eggs in this action-packed ten-part series. Uncover the secrets that lay hidden in fossils around the globe, and learn all about the lost world of the dinosaurs along the way!
In their fourth adventure, the detectives travel to the opal mines of Australia, in search for some hidden fossil treasures. But when their journey into the mines begins to go wrong, they can only suspect one man. When Dad’s spirit appears to be broken, it’s up to Matt and Jo to make things right.