Izzy, with the help of her AI assistant, Amy, has spent the last nine months solving cases even faster than before. After being targeted by two serial killers in as many years, she has avoided serial killer cases -- focusing instead on burglaries and robberies. That is until a retired serial killer challengers her. Once per week, a victim’s name will be provided to her. Izzy must identify the complete list of victims or find the killer before the end of the list is reached. If she doesn’t, the murders will begin again, and she is to be the final victim.