As Poe and the socially awkward programmer Tilly Bradshaw delve deeper into the case, they are faced with seemingly unanswerable questions: despite being heavily vetted for a high-profile job, why does nothing in the victim's background check out? Why was a small ornament left at the murder scene - and why did someone on the investigation team steal it? And what is the connection to a flawlessly executed bank heist three years earlier, a heist where nothing was taken...