George and Annie are off on another cosmic adventure inspired by the Mars Expedition in the fifth book of the George’s Secret Key series from Stephen and Lucy

George travels to the future in the epic conclusion of the George’s Secret Key series from Lucy Hawking. When George finds a way to escape the spacecraft Arte

George and Annie are off on another cosmic adventure to figure out why strange things are happening on Earth in the fourth book of the George’s Secret Key ser

While helping the Omega team track down down the identity of the original thirteen zombies in New York City, Molly tries to keep her mother's secret and uncover