Imagine if you lost your parents - not just in place, but in time. Jake Djones? mum and dad have gone missing and they could be anywhere in the world - at any time in history. Because the Djones family have an astonishing secret, which for years they?ve managed to keep - even from each other. They belong to the History Keepers: a secret society which travels through the centuries to prevent evil enemies from meddling with History itself.