Escape book - The secret code of the Great Vault

Lia is a member of a secret brotherhood. She can ‘break into’ the minds of others, the place where everyone keeps their memories and secrets. Lia and her friends protect those secrets, but the work they do is not without risk. Their leader, Andrew, has been in a coma for months. They have to find out as soon as possible what secret he is keeping in his head, because he is deteriorating rapidly. Solve the riddles at the end of each chapter to find out where the story continues. Otherwise you will be stuck forever in the twisting, treacherous world of Andrew’s thoughts. Also read Escape book in which Lia has to prove that she really is a good burglar.