The killing choice

Summary: It felt like a normal Friday evening before Karl and his daughter Leah were ambushed by a figure in a blank mask. At knife point, Karl is forced to make an impossible choice. Stay and die, or walk away from Leah and take this thug's word that they both will live. Should Karl trust a villain and leave his daughter with a knife at her throat? Could he ever live with himself if he did? It's not long before more seemingly unconnected and innocent people across London are offered a deal in exchange for their life. More blood is spilled, more families shattered, and more people are left to suffer with the consequences of their decisions. DI Alex Finn and DC Mattie Paulsen must hunt for a killer that appears to have no face, no motive and no conscience before more victims are forced to make their choice.