Key Hunters #2: The Spy's Secret by Eric Luper (author) (US edition)

A spy novel with a deadly difference: it can trap you inside it forever! Cleo and Evan must turn spy and defeat an arch-villain to escape from this story alive… Cleo and Evan have a secret: a library of books so dangerous they have to be locked up tight. A friend has vanished inside the pages of one of them. They must find the key that will set her free. Now they’re racing into a spy mission where they must foil an evil mastermind. They’ve got to break into the Viper’s secret underwater lair, complete a daring rescue, find the right key – and reach the story’s end alive…

• Thrilling new adventure series where books come alive

• Imagine The 39 Clues mixed with The Forbidden Library

• Cleo and Evan must find a hidden key in each new story

• Nail-biting spy action in a short easy-read novel