780447 Marv & The Dino Attack (1) Paperback by Alex Koya

Marvin is on a school trip at the Natural History Museum when a chilling roar resonates through the exhibition . . . the dinosaurs have come back to life and are wreaking havoc! Marvin will need to assume his secret super-identity and try to save the Museum. It's time for another thrilling adventure for the intrepid Marv!