“The Eaters of Light” wasn’t my favorite episode of Doctor Who’s tenth series – not by a long shot. But this novelization, written by the episode’s screenwriter, Rona Munro, takes an otherwise forgettable story and turns it into something that works relatively well. The Doctor, Bill, and Nardole arrive in second-century Scotland, trying to figure out what happened to the Roman Ninth Legion. Along the way, they uncover a small Scottish village under siege by a mysterious creature from another world. A creature that eats light. It’s up to the Doctor, Bill, Nardole, and the remnants of both the village and the Ninth Legion to stop this creature before it devours the universe as we know it.