The Golem's Eye by Jonathan Stroud *****

This is the sequel to The Amulet of Samarkind. In this book Nathaniel is older and works in the government as junior minister of Internal Affairs. There has been a mysterious break-in in some of the stores owned by magicians and as junior minister of Internal Affairs Nathaniel is trying to solve who or what did it. So, he summons Bartimaeus (a djinn of extreme power according to his way of thinking) to help him solve the case.

I recommend this book for those who like adventure and drama.