When Roland Doyle wakes up in an unfamiliar motel room with a strange man's wallet in his pocket and a woman's dead body in the bathroom, he fears the worst...and that's before he finds the vial of pills labeled "take one every 4 hrs or else." Or else what? Ten years ago, Dr. Sebastian Briggs's clinical drug trial for a cutting-edge fear-response drug went horribly wrong--or did it? It's true that one trial participant died and five others were left...