Takes one to know one : a novel / Susan Isaacs.

"Just a few years ago, Corie Geller was busting terrorists as an agent for the FBI. But at thirty-five, she traded in her badge for the stability of marriage and motherhood. Now Corie is married to the brilliant and remarkably handsome Judge Josh Geller and is the adoptive mother of his fourteen-year-old daughter. Corie fills her days scouting Arabic fiction for literary agencies and, every Wednesday, she joins a group of fellow Shorehaven freelancers for lunch at an allegedly French bistro. Life is, as they say, fine. But at her weekly lunch group, Corie senses that something is off. Pete Delaney, a milquetoast package designer, shows up early every week. He sits in the same spot, often with a different phone in hand, and always keeps one eye on his Jeep parked in the lot across the street. Corie can't help thinking that Pete is hiding something-and as someone who is accustomed to keeping her FBI past a secret from her new neighbors, she should know. But does Pete really have a shady alternate life, or is Corie imagining things, desperate to add some spark to her sweet but unduly safe existence? She decides that the only way to find out is to dust off her FBI toolkit and take a deep dive into Pete Delaney's affairs."-- Provided by publisher.