Quick, fun story about a boggart who gets accidentally transported to Canada, and the kids who help him get home. It's not nearly as good as anything from Cooper's The Dark Is Rising sequence - the more atmospheric bits here are confined to the Scottish setting at the beginning and end of the book - but it's still an enjoyable read. I'm not sure that I'm overly thrilled by the intrusion of computers into a fantasy story, but the theatre parts were more to my taste, and I liked the throughline of Labradors!