Amy and Dan Cahill are no strangers to impossible tasks. After seven of their relatives were kidnapped, the siblings scoured Europe for the priceless artifacts Vesper One demanded in exchange for the hostages. But then the Cahill kids are given an assignment that pushes them to their breaking point-a journey to a legendary city. Amy and Dan know they can't afford to fail, yet they're running out of options. . . and running out of time.

When zombies attack a village, it is up to Steve to go on a quest to mine for diamonds, so he can turn them into a sword, defeat the undead, and save the villagers.

While on a school trip to the British Arts & Antiquities Museum, John Watson and his friends from the Baker Street Academy get involved in a mystery when the Alpine Star, a famous diamond, is stolen.

Arthur Bash is the school thug-for-hire (paid in candy bars), mostly because he just looks the part, so when orphan Darius Drake offers him three candy bars to accompany him to the run-down Stompanado Housing Complex, and just look menacing, he agrees--and soon finds himself deep in a mystery involving Darius' estranged grandfather, the lost Dunbar Diamonds, and the villainous Jasper Jones.

"Steve se dedica a cultivar trigo e intercambia su cosecha por alimentos, materiales, armas y todo lo que necesita para sobrevivir en el universo Minecraft. Un día descubre que los zombis han atacado el pueblo y han convertido al herrero en uno de ellos. ¿Cómo van a fabricar ahora espadas para defenderse? Steve empieza entonces una trepidante aventura para conseguir cuarenta diamantes, el material más poderoso de Minecraft, y forjar con ellos...