An Unkindness of Ravens
Ruth Rendell
 When Wexford does a favour for his wife - to look into the disappearance of one of their neighbours' husbands - everything he finds seems to confirm his first inkling: that this is simply another case of a bored middle-aged man having run off with a younger woman. However, when Rodney Williams is found dead, and another local man is stabbed in his car, Wexford finds himself thrown into an investigation involving a militant feministic organisation known as "Arria", who have taken the raven as their symbol.