Around about 2010 I read a fantasy book in which the main character was an adopted son called Boy. The adoptive father was a stage magician, but it seemed to imply that there might be some real magic behind at least one of his tricks (he could disappear by saying something like 'away with the fairies'). I recall it seemed to be set in a late Victorian era, possibly in London. The father lived in a tower overlooking the city, and had a powerful (perhaps magical?) telescope. There was an emperor / king who ruled the land and might have been an enemy of the father, and it was implied at various points that the boy might actually by the offspring of the emperor and next in line to the throne.
- A fairly well known Male British author I think.
- Published around 2010, first book in a series.