Title Details

Dr. Oliver Reece suspects that the intriguing young woman has perpetrated some kind of malady on the only other person on the underground platform when her peculiar behaviour and the man's collapse coincide. Suspecting but not sure, he cannot confront her and attempt to save the man's life at the same time and she dashes into the night leaving him to fend for her victim.
Sophie Newton panics when she notices the doctor too late, performing CPR on the man on the train. Both speculate about the other until their paths cross again coincidentally when Sophie is attacked in an alley by a homeless man. Oliver sets out to befriend Sophie and appease his curiosity to confirm his suspicions. At the same time Oliver appears in her life so does a mysterious photo of twin girls, Sophie and Sydney, a sister she doesn’t remember but who apparently knows of Sophie and her movements while staying in the shadows only leaving traces of her existence for Sophie to follow but she is not so willing a participant, not wanting to be reminded of an abusive past.
While he empathizes with Sophie without questioning her moral stand point, Oliver learns that the woman on the train and the woman he befriends are somewhat contradictory. While she calls the poison her only friend and an endowment that saved her from poverty, Oliver walks the fine line between accusation and revelation to be a part of her life by showing her how to have the ‘normality’ she covets most. Even after Sophie begins to confide in him, he still hides his own secrets from her.
Meanwhile, he is confronted by Jacki, a nurse, who accuses him of “playing God” prodding him to reveal his secrets by claiming to already know them but he doesn’t fall into her trap unable to determine if she really knows the truth or not. He also receives valuable love advice from Mariella, a terminal patient, and as much as he wants to help her she is resistant and bitter.
Sophie is overwhelmed at Oliver's interest and hope for her future, Sydney lurking in her present, and the reconciliation of a painful past start to converge as Sophie and Oliver become aware they are players in someone else’s game. As events unfold, her profession starts to pose more and more risk as Sophie and Sydney’s lives start to converge in a labyrinth of mistaken identity, sex, and blackmail. Identities are revealed, coincidences are found to be deliberate, and confrontation ensues.