Detective Justice Flynn has no desire for serious relationships after being hurt twice before. He also doesn't need a partner with a chip on her shoulder. Dealing with her own demons, Detective Samantha O'Reilly moves to Chicago for a fresh start. After her former partners murder she has one rule-no mixing business with pleasure. Working with ornery and arrogant Flynn won't be a problem. In a city plagued by violence, a serial killer emerges, leaving bundles of shamrocks on the victims. Frustrated when the body count rises Flynn and O'Reilly turn to a psychic for help. When she reveals the murderer moves through time via a fairy circle, it's not what they expected. Neither is the desire that forms between them. When Flynn disappears during a stakeout for the murderer, Sam realizes some people aren't who they appear to be.