The Odessa File by Frederick Forsyth is a thriller describing the investigation of a German journalist. 
 On the night president Kennedy is shot, Peter Miller is driving to his Mother's place for a weekend visit. However a quick instinctual followup of an ambulance leads him to a dead old person. Events following the death of the old man bring new revelations for Peter regarding the history of the second World War. 
 The story starts up really watertight with names, dates and places. Gradually we follow Peter as he uncovers clues about the existence of a secret Nazi organization. The climax might feel a bit more Hollywood but the book still ends up a quick and a great read.