Bestselling author Frank Corso is at first reluctant to investigate the four-year-old unsolved murder of a hapless delivery driver who appeared at a bank one frigid morning in a small Pennsylvania town with a note demanding cash and a bomb locked to his body. Minutes after he left, the bomb was detonated by remote control. Coerced by his editor into probing the story further, Corso endures two attacks on his life and his curiosity is quickly sharpened - clearly someone still has something to hide. Then, only a few days later, a series of bank robberies and bombings rock the Los Angeles area . . . Corso and his research assistant, the attractive Chris Andriatta, are swept into the investigation by the FBI. And where the feds see nothing but the random hand of a lunatic, Corso begins to see the tracks of something more sinister, something with a message, something that he and Andriatta may inadvertently have started and which only they have the power to stop . . .