A research team arrives in Castle Key to explore the wreck of an old smugglers' ship that sank in Pirate Cove. When Scott and Emily dive down to the wreck, Scott glimpses a long lost artefact said to hold the key to a hoard of smuggled treasure. But when the team leader goes back to recover the artefact, it has mysteriously vanished! Was Scott mistaken or is somebody else after the smugglers' loot? Follow Scott, Jack, Emily and Drift on a very mysterious treasure hunt.

When a young prince is kidnapped while on a school camping trip in Castle Key, Scott, Jack, Emily and Drift are eager to take on the case. Drift's clever nose is sure to sniff out some clues to the kidnappers - but can the friends rescue the hostage in time?

There's a new resident in Castle Key - and somebody is watching him! Scott, Jack, Emily and Drift soon suspect that the new resident is an enemy spy. It explains the bullet-proof glass in the windows of his house. And the MI5 agent who is clearly keeping tabs on him! But what is an enemy spy doing in Castle Key? Can the friends reveal his true identity? And uncover his top secret mission? Join Scott, Jack, Emily and Drift as they investigate a man so mysterious he's almost invisible!

Perfect for fans of INDIANA JONES and PERCY JACKSON, this third exciting installment in Helen Moss' SECRETS OF THE TOMBS series follows Ryan and Cleo on another death-defying mission. Can Ryan and Cleo uncover the secrets of the tombs and solve the mystery before it's too late?

When Scott, Jack and Emily rescue a drowning man from the waves they are keen to hear his story, but their new friend can't remember how he came to be stranded at sea! The friends are instantly on the case - with enthusiastic assistance from Drift the dog - determined to find the truth and solve the mystery of the drowning man.

Thousands of silver cobs lie under the sands of Rhossili. Tom Bennett has investigated and found that the coins were traded for furs in New Amsterdam (New York) in 1639. The coins were part of a cargo on the Dutch West India Company ship Princess wrecked at Mumbles in 1647. Beaver furs, red timber and the bodies of 80 souls were scattered across Swansea Bay and the wreck was salvaged by Squire Mansel of Henllys on the Gower.