Darkness is his hiding place; roofs are his territory. A mysterious man haunts Royal City.

Have you ever walked through a dark, empty street? Have you ever had that strange feeling that someone is watching you? Has it ever occurred to you to look up? The Masked Man is roaming the city rooftops—his hiding places. What would you do to stop him?

Rex continues looking for the necklace, but he’s using others to do his dirty work. And the Masked Man is doing one of the dirtiest jobs in the city. When the Masked Man attacks the king, things get serious. Everyone wants to get him, but no one knows where he’s hiding. Though King Ethan has no idea how much danger he’s in, others are getting suspicious. Now the hunt starts. Yet, it’s not clear who’s hunting whom.