On the twenty-third day-he hunts, bringing the scum of the earth to justice; his justice. Ending up as a patient on Dr. O'Reilly's table could either save your life or end it in the most horrific way. New York City. The infamous city that never sleeps; the place where dreams either shine brightly or shatter into razor sharp pieces of metal. For Dr. Cian O'Reilly, it's the perfect city to disguise his dark alter ego. As a top surgeon at Lincoln Hospital, he has access to resources far beyond the reach of the average person; the ideal cover for his double life. By day, he's the epitome of professionalism. By night, the facade is stripped away and his true depraved self is revealed. When Dr. Athena Payne joins the roster as a new surgical intern, Cian's carefully constructed life is thrown into turmoil. With her sunny smile and wide-eyed innocence, she threatens to break through his iron-like exterior, exposing the man beneath. Following her dream of becoming a cardiovascular surgeon, her internship at Lincoln Hospital is the first step in achieving her goals. Something about the dark air of mystery that surrounds her new boss, Dr. Cian O'Reilly, leaves Athena questioning just what it is that the good doctor is hiding. A killer on the loose. A doctor wielding a deadly blade. An intern caught in the midst of first love and a lethal web of murder.Lincoln Hospital. Where the cure can be your worst nightmare.Warning: Contains violence and graphic situations not suitable for readers under the age of eighteen. This is the first book in a series and ends on a cliffhanger. All books must be read in order to follow the series.