Smart and bold teen Theodosia “Theo” Throckmorton leads an adventurous life at the turn of the 20th century with her intrepid Egyptologist parents and inventor brother, Henry. When she stumbles upon a mysterious artifact in a hidden Egyptian tomb, Theo winds up unlocking the ability to perform real magic – and discovers a new world full of mystery and danger. Back home in London, alongside stylish Egyptian princess Safiya and street magician Will, Theo and Henry must use the power of the Eye of Horus to ward off the Serpents of Chaos, a group bent on stealing the relic to unleash untold darkness upon the world. Based on the acclaimed book series by R.L. LaFevers, Theodosia promises nonstop action as a daring group of friends take on the forces of an ancient evil – one spell at a time.