Hello. I am Rory Branagan. I am a DETECTIVE, and the time has come for me to solve the BIGGEST and most IMPORTANT mystery in my life: where is my Dad? The Dame Norton Diamond, the most expensive jewel ever stolen, has been MISSING for seven years – and so has my dad. Bad guys want to find him. The police want to find him. I need to get there first, and NOTHING can hold me back. Not evil baddies, not the deep, dangerous ocean – and not even the biggest SHOCK of my life... The seventh and final book in the hilarious and action-packed comedy-crime series is perfect for children aged 8 and up, and all children at heart.