"It's just the same things over and again for Sean Duffy: riot duty, heartbreak, cases he can solve but never get to court. But what detective gets two locked-room mysteries in one career? When journalist Lily Bigelow is found dead in the courtyard of Carrickfergus castle, it looks like a suicide. Yet there are just a few things that bother Duffy enough to keep the case file open. Which is how he finds out that she was working on a devastating investigation...

An illegal immigrant is killed in a hit-and-run on a frozen mountain road in the town of Fairview, Colorado. No one is prosecuted for his death and his case is quietly forgotten. Six months later another illegal makes a treacherous run across the border, barely escaping with her life. She finds work as a maid and, secretly, begins to investigate the death of her father. But she isn't a maid, and she's not Mexican. She's Detective Mercado, a police...