Kidnapped : Book 3

How to become an Undercover Pirate...1) Have a pirate captain as your ancient ancestor2) Find a message in a bottle and a magic gold doubloon3) Get whisked back in time to join a pirate crew4) When you get home DON'T TELL ANYONE. Remember - you're undercover!A fearsome encounter with enemy ships leads to a huge sea battle. When the smoke clears, Sam realises Charlie has vanished. Could his crewmate have been kidnapped? It's Sam Silver to the rescue!