Major and Mynah: Project Puffin by Karen Owen follows the adventures of SPUD – the Super Perceptive Undercover Detectives – who are on holiday, but soon find themselves in a race to solve a new mystery!

When they discover puffins coated in waste oil that has been dumped in the sea, they must find out who is to blame. Can they crack the case before more damage is caused to precious sea life and the Welsh coastline?