FBI agent and profiler Caleb Black was in conversation with Sergeant Gavin Sutherland, head of the Brooklyn K-9 Unit, which had been formed just months ago, and the deputy police commissioner. They were inside a meeting room in the appellate courthouse in Brooklyn Heights to easily accommodate the commissioner, who’d had a press conference there earlier. The sergeant wrapped up what he knew about the department’s ongoing efforts to locate a recently identified murder suspect, Randall Gage. A twenty-year-old investigation into the shooting deaths of the McGregors, a married couple with two children, had been revived after a very similar double homicide. The MO in the current case involving another couple, the Emerys, was almost identical, down to the killer sparing the life of the victims’ young daughter, Lucy, just as he had left Penelope McGregor unharmed many years before. It was going to be up to Caleb Black to compare clues, a clown mask and a stuffed monkey toy, and decide if the same murderer was truly back in action, or if they had a copycat on their hands.