A young boy, Pete Morgan, is on holiday in the Caribbean with his parents. They are staying on their boat called the Summer Sun. It is the only boat near Blue Sea Island. Or is it? One day, Pete has a visitor...

Marcel visits his friend, Henry, in London. Henry knows a
professor and he has some very interesting letters ? by William Shakespeare! Marcel and Henry want to see the letters, but they are not in the professor?s flat. Marcel is a detective. Can he find them?

Marcel and his friend Céline are on holiday in Los Angeles. They are staying in the home of Arnold Waldman, a famous film director. But on the first night of their holiday, kidnappers take away Arnold?s daughter?

Tommy Grant is a taxi driver. One morning his boss telephones him. ?Can you be at the Ritz hotel at 9 o?clock?? he asks. The 12-year-old son of a film star is in London. His name is Dino. ?Be very nice to the boy,? Tommy?s boss says.

It?s 1798. Sam Tinker and his daughter Jenny live in London. One day a thief puts a watch in Sam?s hand. ?Take this,? he says, and runs away. Two policemen see the watch and take Sam away. What can Jenny do? Can she help her father?

Mark Jackson is on holiday in Turkey. He visits the old city of Troy and finds a yellow stone. ?I know this stone,? he thinks. ?It comes from ? from ...? Suddenly Mark goes back in time. He can see a beautiful city, soldiers and a big wooden horse.

Felix is not a happy bird. He comes from Brazil but he doesn?t live there. He lives in New York in a cage. Then one day his cage opens and Felix says goodbye to New York. Can he find his family in Brazil again?

Billy and his sister want new bicycles, but they don?t have any money. Then their grandmother has an idea. There?s a competition in Palace magazine. The first prize is £500. ?What do you think?? Billy asks his sister. ?We can buy two new bicycles for £500,? she says.