Books in the Tintin in Scots series

Tintin''s friend Chang has been killed in a plane crash in the Himalayas. But after a strange dream, Tintin is convinced Chang is still alive. Together with Captain Haddie and Tarrie, he sets out on an impossible mission, an adventure high into the mountains. They must find Chang at all costs... but someone - or something else - has found him first!

Tintin finds a model of an old warship, the Unicorn, once commanded by one of Captain Haddie?s ancestors. Hidden within the ship is a clue to the location of the lost treasure of the infamous pirate, Rachlan the Reid ? and it?s a clue a gang of unscrupoulous criminals is prepared to kill for.

Beneath the waves of the Caribbean, Tintin and his friends follow a series of clues in search of the lost treasure of pirate Rachlan the Reid. Their quest leads them to a desert island and a sunken wreck and a chest which promises plenty of treasure? but only if they can understand one final riddle.