In 1906 London, 14-year-old Theodosia “Theo” Throckmorton gathers an eclectic team that includes her younger brother Henry, along with friends Will and Egyptian Princess, Safiya, to fight a powerful secret society bent on destroying the world with ancient Egyptian dark magic....
John Taylor lives in quiet solitude, designing puzzles for a living, under the nom-de-plume of 'Ludwig'. When his identical twin, James, disappears off the face of the earth, John takes over his brother's identity in a quest to discover his whereabouts....