Oh right, so we have been discussing the main players of the series, but what about the secondary characters?
(forgive me I don't have the book on me @ the moment)
Mac's dad: Mr. Lane
He was upset in the begin of the book when some old college friend called him up. He started to act different. And I believe this is after the news of Alina. So, could that phone call been from Mac's real relatives? And then there the fact that he recieved the photos of Alina's dead body in the alley. Mac saw this as being weird because why would they give a grieving father this photos to look at. And Mac had to ask for hers?
The old lady in the bar/museum. I think is she the one that has the key to unlock Mac's past. She also mentions the name Patrona? (don't have the book so I don't know if this is the correct spelling)
Once, I get my hands on the book I'll add more that I can't remember at the moment!