Join Nell the Detective Dog and help solve the mystery of the missing books in this Number One bestselling rhyming picture book adventure by Julia Donaldson and Sara Ogilvie, creators of Gozzle.Peter's dog Nell has an amazing sense of smell. She is always hard at work solving mysteries and finding all Peter's lost toys. When she's not cracking cases, Nell goes to school with Peter and listens to the children read. But one day Peter and Nell arrive at school to find all the books have disappeared! Who could have taken them, and why Luckily, Detective Dog Nell, with help from the whole class, is ready to sniff out the thief!Written by Julia Donaldson, author of The Gruffalo, and illustrated by the multi-talented illustrator and print-maker Sara Ogilvie, The Detective Dog is a fast-paced celebration of books, reading, libraries and the relationship between a little boy and his rather special dog.Look out for more animal adventures by Julia Donaldson and Sara Ogilvie: Gozzle and The Hospital Dog.

Julia Donaldson is the author of some of the world's best-loved children's books, including modern classics The Gruffalo and The Gruffalo's Child, which together have sold over 17 million copies worldwide, and the hugely successful What the Ladybird Heard adventures. Julia also writes fiction, including the Princess Mirror-Belle books illustrated by Lydia Monks, as well as poems, plays and songs - and her brilliant live shows are always in demand. She was Children's Laureate 2011-13 and has been honoured with a CBE for Services to Literature. Julia divides her time between West Sussex and Edinburgh.Sara Ogilvie is an award-winning illustrator and printmaker from Edinburgh based in Newcastle upon Tyne. Her bestselling and much-loved children's books include Dog's Don't Do Ballet by Anna Kemp and The Zebra's Great Escape by Katherine Rundell. Her collaborations with Julia Donaldson, The Detective Dog and The Hospital Dog, have sold a total of over a million copies worldwide and have won the Books Are My Bag Readers' Award and the Indie Book Awards in the UK. In addition to working on her picture books, Sara lectures in Illustration and Graphic Design at Northumbria University and continues to create work that is exhibited worldwide.