Sam Sedgman is a bestselling author, confirmed nerd and enthusiastic ferroequinologist. Before writing stories for children, Sam worked as a digital producer at the National Theatre, which meant nosing around backstage with a camera and a microphone, cajoling theatre makers into explaining how stories get made. Forever interested in piecing things together, Sam is a lifelong fan of puzzles, games and detective fiction, and once founded a company making murder mystery treasure hunts for adventurous Londoners. His books have been translated into more than 20 languages. When he isn't writing, Sam is usually poring over a map to plan his next adventure, devising a treasure hunt for his friends or explaining some weird fact to you. He lives in London, on top of a railway station.