ISBN-13: 9781416986669 / Angielski / Miękka / 2008 / 192 str.
In this finale of a three-part mystery series featuring 13-year-old Finnegan Zwake, Finnegan and his uncle travel to the Sahara for an international mystery writing competition. Some of the contestants want the prized Ruby Raven so much they are willing to do anything to possess it.