Time Keys

Sim and his mum never live anywhere long. When dangerous strangers appear one night, Sim discovers why. His mum has been keeping secrets: she has the power to open doors in time. Running for their lives, Sim and his friends are determined to outwit the sinister Council of Keys and be the first to find Nefertiti’s lost tomb and a powerful door to Ancient Egypt. They must piece together long-hidden clues if they are to solve the mystery of her golden heart scarab. Can they find it before the Council finds them?

Sim's Uncle Emmett is missing and on the run from the ruthless Council of Keys. Sim and his cousin Jeopardy are determined to find him. Their search takes them through a hidden door in time to Viking Norway and a desperate mission across land and sea to stop the legendary Gjallerhorn - said to herald Ragnarök, the end of the world - from falling into the wrong hands.

Sim, Jeopardy and Nelson are enjoying an amazing holiday in Rome, until they are swept up in the mysterious disappearance of world-famous illusionist Kinetic. When Kinetic's sister finds a strange description of a Roman gladiator in a history book who sounds uncannily like her brother, the friends are determined to help. They travel through secret time doors to the spectacular – and deadly – Colosseum in 80 CE.