Unknown: A biochemist and his dishy wife arrive in Berlin for a conference at which a scientist and his controversial Arab funder will announce breakthrough research. While his wife checks into the hotel, he grabs a cab to return to the airport for his briefcase, left at the curb. En route, an auto accident puts him in a coma, from which he awakes four days later without identification and with gaps in his memory. He goes to the hotel: his wife refuses to recognize him and another man has claimed his identity. With help from a nurse, the cab driver, a retired Stasi agent, and an academic friend, he tries to unravel what's going on. Is the answer in the briefcase?

Edge of darkness: The bullet that killed his daughter was meant for Boston cop Thomas Craven. That's what police brass and Craven himself think, but that's not what the investigation finds. Clue after clue and witness after witness, the search leads him into a shadowy realm where money and political intrigue intersect. If Craven wasn't a target before, he, and anyone linked to his inquiry, now is.