Einstein, Bounce and Puzzle are thrilled to be back at Sandcliff Lighthouse for another holiday. There are lots of other pups staying there this time which means fun for everyone!

But when the local beach is covered in dog poo, the pals find themselves in a sticky situation. It gets so bad that even the puffins - who visit every year - are staying away! And then the local people start to blame the kennels, even though the pups know that Jackie and Trevor always clean up after them.

Who is behind the smelly secret of Sandcliff Beach? Can the pups uncover the stinking truth in time to save Trevor's kennels and persuade the puffins to come back?

Amanda Swift has written for several well-established children's TV series, including My Parents are Aliens. She has also written three novels for middle-grade readers: The Boys' Club, Big Bones and Anna/Bella.She lives in south-east London, quite near the Olympic Park.

Jennifer Gray is a lawyer and now writes children's comedy. Her other work includes the Atticus Claw series which has been shortlisted for the Waterstones Children's Book Prize and the Red House Children's Book Award.

Steven Lenton is a bestselling illustrator and award-winning animator who loves to create charming and cheeky characters. Originally from Congleton in Cheshire, he is now based in Bath where he works with his little deaf Jack Russell, Holly on his lap.