The Case of the Lost Antrum is the ninth book in the Wolflock Cases teen fantasy mystery series.

Mystentine City. The city of magic. And the city of lost children. Unable to ascend the mountain and enrol at the university until a missing child is returned, Wolflock must use all his investigative skills to find out what really happened. Is she a runaway? Is she lost? Or is something far more sinister at play? In his quest to find the truth, Wolflock discovers that, instead of a puzzle, he has found a plot that may sink the city into turmoil. It seems that the missing girl may be the key to solving more than one mystery.