Summary: Four teenagers discover an underground fallout shelter thanks to a friend, who agrees to have them hide there with the door locked for a few days to escape a school trip. Yet, time passes, and their friend doesn't come back to get...

Summary: Alex Rider is an ordinary teenager enlisted to work on behalf of MI6, where he uses skills he didn't know he had to become an extraordinary spy.

Summary: Two female British code breakers team with American cryptographers to solve a series of murders in San Francisco.