"Necessary Evil" is a detective thriller by Edward Marston, which opens readers to a fascinating world of intrigue and secrets, where every step leads to unexpected revelations. The main character, detective Robert Finch, investigates a brutal murder using all his experience and intuition. Gradually, discovering many suspects and circumstances of the crime, he tries to figure out who and why ended the victim's life. Readers feel the tension of every page, sympathize with the hero in every step taken and remain enthralled by every unexpected plot twist. "Necessary Evil" is an exciting novel that will not leave indifferent any detective fan.