With the suspicious death of Tad Halston, Detective Darek Blake findswalking the line between NYPD detective and Zodiac member a more daunting taskthan ever. Hannah Halston, Tad's sister, refuses to believe the official storythat her brother went on a vengeful killing spree. She's doing her best toclear his name, which brings Darek's partner, Special Agent Lizzy McNamara, even closer to his criminal past. Meanwhile, whoever is targeting the Zodiacs...