Royal Institute of Magic

Two years ago, Ben Greenwood's parents disappeared. The police have all but given up finding them when Ben stumbles upon a peculiar letter addressed to his dad. “You are the most wanted man in the Unseen Kingdoms. Unless you come to us, we cannot help. For your child's sake, tell us what you know.” The letter is from an organisation called the Royal Institute of Magic and is dated a day before his parents disappeared. Like most people, Ben hasn't the faintest idea what the Institute is, but he has his first clue: the logo on the letter...