Lefèvre, a French archaeologist, has arrived in Istanbul determined to uncover a lost Byzantine treasure. Yashim is commissioned to find out more about him. But when Lefèvre's mutilated body is discovered outside the French embassy, it turns out that there is only one suspect: Yashim himself. Once again, Yashim finds himself in a race against time to find the startling truth behind a shadowy secret society dedicated to the revival of the Byzantine Empire, caught in a deadly game deep beneath the city streets, a place where the stakes are high - and betrayal is death.

Stevie Marsh is off for the summer to learn about computers at Camp Viper. He’s not happy about being in the woods with all the bugs and poison ivy and—yuck!—snakes. But how bad can computer camp be? Then Stevie finds out Camp Viper isn’t a computer camp at all. The vipers at this camp are the kind that slither!

It was the first time in my life that I'd ever felt that I didn't actually belong to anybody... I started thinking about my mother and whether she had wanted me when I was born. I didn't even know her name. Using an address on a torn envelope, James decides to find out who he is.

In this breathtaking adventure, Zélie and Jules face a deadly race to solve a family mystery and a vicious crime that stretches from the jungles of Calcutta to the sewers of Paris. Zélie is often accused of being a witch, but she doesn't believe in magic. Until Jules climbs up from the reeking Parisian sewer and hands Zélie the golden locket he discovered there. The locket once held the magical Snakestone, and Zélie knows that if she can find the stone, she might also find her missing father. But a dangerous secret society are equally desperate to get their hands on the Snakestone and its powers. With their lives under threat, Zélie and Jules embark on a desperate hunt for the treasure, facing strange riddles, a mysterious circus, and the miles of murky tunnels that twist beneath the ancient city above... Perfect for fans of Nazneen Ahmed Pathak, Abi Elphinstone and Kiran Millwood Hargrave.

While celebrating his eleventh birthday with his mother and his friend Olga, Klooz relates the case that started his detective career, which involved magic balls, and a boy named Snake who was his best friend.

This is the extraordinary story of the discovery of the ultimate secrets of some of the world's most enigmatic mysteries - including the Holy Grail, the Elixir of Life and the Philosopher's Stone.