When today is interchangeable with yesterday, tomorrow may never come at all. Struggling actor Peter Abbott is about to land the biggest role of his life -- and of the future, past, and present of everyone around him. His audition for Calliope Associates requires only proof of his psychic skills, no dramatic monologue. When a government needs to know what weapons its enemies are hiding or the FBI needs to find an elusive criminal, they call Calliope, a clandestine private investigation firm made up of men and women with highly developed psychic abilities. Business is booming -- until members of the group begin disappearing at the hands of fellow psychic Simon Haywood. His genius is matched only by Peter's, but Simon alone discovers a unique way to use his extrasensory skills to travel back in time, committing crimes without any trace. His trips become increasingly more dangerous than they appear on the surface. Simon's mind grows warped and paranoid as the universe strains against his tinkering. Terrified that his extracurricular voyages will be curtailed, he plans to "erase" his colleagues.