Heartwarming and powerful, a young girl and ex-police dog bond over their grief and work together to solve crime.

Haley has withdrawn from the world and retreated into her shell ever since her police officer dad was killed in the line of duty a year ago. Hero is a young police dog who has been retired early - his handler was injured in the line of duty and he cannot seem to bond with anyone else. But when Haley and Hero meet, two lost souls find one another.

As they settle into their new lives, they quickly learn that old habits die hard when Hero is instantlyonto a clue when the Whittaker Diamond is stolen. And Haley is furious when DI Doyle, a former rival of her dad's, is assigned the case and immediately accuses ex-offender Dylan - an employee of her mum's catering business which offers second chances and rehabilitation.

Can Hero and Haley crack the case?

• Filled with heartfelt emotion and thrilling twists, this is a brilliant cosy crime story with a gorgeous bond between girl and dog at its core.
• A tale of friendship and mystery for readers aged 9-12.
• Perfect for young animal lovers and fans of The Mountain Rescue Dogand The Last Bear.