Violent Mind Candy

The heroes are Null, a man with neither feelings nor humanity, a near automaton of vengeance, and Boyd, a woman who has lost everything in her life that meant anything to her ruled by guilt and a sense of duty at war with her compassion. Criminal psychopath Dr. Benway, who saved Null's sanity with an illegal, experimental therapy, has invented a new designer street drug delivered by a stick of gum...