Help Nell the detective dog solve the mystery of the missing books with this special tenth anniversary edition of the bestselling rhyming picture book The Detective Dog from the creators of Gozzle. Written by Julia Donaldson, author of The Gruffalo, and illustrated by the multi-talented illustrator Sara Ogilvie, The Detective Dog 10th Anniversary Edition has a shiny gold foiled cover and includes a letter from the author and a sneak peek inside the illustrator's sketchbook. One day Peter and his dog Nell arrive at school to find all the books have disappeared from the classroom! Who could have taken them, and why? Luckily, Detective Dog Nell, with help from the whole class, is ready to sniff out the thief! This rhyming adventure is a celebration of reading, libraries and the relationship between a little boy and his rather special dog.