Leo Stone is a killer. A year ago, he was convicted of murdering two women and sentenced to life without parole. But now, a juror from his trial has revealed the jury was prejudiced, and a retrial is called. Detectives Maeve Kerrigan and Josh Derwent are tasked with re-examining the evidence. Before long, they uncover links between Stone and a possible third victim. But with Stone behind bars, a fourth woman disappears in similar circumstances. Is there a copycat killer out there, or have they been wrong about Stone from the start? And will Maeve discover the truth before another innocent victim is killed?