They Did It with Love by Kate Morgenroth

After her father's death, Sofie and her husband, Dean, decide to move to Greenwich, Connecticut from Manhattan. Dean works long hours while Sofie occupies herself by joining a mystery book club lead by her neighbor, Priscilla. Other members of the group include Susan, Ashley, and Julia who are also childless and careerless. When one of the group members is found dead, Sofie decides to do some investigating of her own. Soon we see all the cracks in everyone's marriages and so-called friendships. Detectives Peters and Ackerman must wade through all the lies to find the truth in this very upscale community. But when they find the person they believe is the murderer, are they correct?