In Robert Ludlum's "The Hades Factor," the improbably handsome, intelligent, and talented Lt. Col. Jon Smith, M.D. returns from a conference to find his similarly spectacular fiancée dying of a new, lethal virus she had been working to identify at their laboratory at USAMRIID. A warning from a friend and former FBI agent tells him to run for his life. He doesn't; he is determined to find out what killed her, and why.The story is gripping and suspenseful. Of course the bad guys are diabolical and powerful beyond reason, and the good guys resourceful beyond credulity. That's part of the deal with this kind of book. It's good entertainment, straining the limits of belief just enough to be a fun read while not crossing the line into complete silliness.The audiotape version is well-read, and I highly recommend it for listening to in the car during a trip or commute.