When Sam's crewmate, Harry Hopp, wins an ancient treasure map while playing cards, he is disappointed to find that the treasure lies at the heart of a famous cave complex. The treasure is legendary - and so is the fact that all those who seek it get lost in the labyrinth!
Sam is convinced that with the aid of the map, he can find the treasure, but if he's wrong he could be doomed to wander the caves for ever...
Jan and Sara were already friends when one day they decided they wanted to write children's stories and it would be more fun to write them together. That was 15 years ago. Since then they've written over 130 stories - including some about ghosts, football, ghosts playing football and naughty gargoylz. Jan lives in Essex with her family and Sara lives in London with hers. They both have black cats who completely rule their lives.
For more information, visit Jan and Sara's website www.burchettandvogler.co.uk and follow them on Twitter at https://twitter.com/BurchettVogler. Keep up-to-date with the Sam Silver: Undercover Pirate blog at http://samsilverundercoverpirate.blogspot.co.uk.