Which Mystery Romance Books For Adults Feature Married Detectives?

In the Chicago mafia, refusing a powerful man is the same as signing your own death warrant. At twenty-one, Valentina is forced into marriage with Adrian DeLuca— the cold, feared underboss whose first wife died under mysterious circumstances. The rules are clear: obey, stay silent, and never ask about the past. Adrian doesn’t want love. He wants a wife who looks perfect at his side and a mother for his children. Nothing more. Their marriage is built on duty, fear, and carefully maintained distance until Valentina begins to see the cracks beneath his ruthless control. The DeLuca mansion is full of secrets. Locked rooms. Unspoken rules. A five-year-old boy who hasn’t spoken since his mother’s death— until he whispers something that changes everything. “I still see my mom at night.” What begins as a marriage of survival turns into a dangerous search for truth. As Valentina uncovers what really happened to the woman who came before her, she realizes the greatest threat may not be the man she married, but the one everyone believes is dead. In a world where loyalty is deadly and love is a weakness, Valentina must decide who to trust before the truth destroys her marriage… or her life. A dark mafia romance about forced marriage, forbidden secrets, and the woman who refused to stay powerless.

Emma Lawson believed she knew everything about her husband. For seven years, she stood by Daniel Hart's side through every success and setback. She trusted him completely, built a life with him, and dreamed of starting a family together. Then one ordinary evening changes everything. A simple phone notification leads Emma down a path she never expected to follow. What begins as a harmless suspicion quickly turns into a nightmare when she discovers that Daniel has been living a second life—one filled with secrets, lies, and people she has never met. Another home. Another identity. And a young girl who calls him "Dad." Heartbroken and desperate for answers, Emma starts digging deeper. But the more she uncovers, the more dangerous the truth becomes. Because Daniel's secrets go far beyond infidelity. Someone is willing to kill to keep the past buried. As Emma fights to uncover the truth, she finds herself caught in a web of deception, betrayal, and hidden enemies. And when a mysterious stranger enters her life offering protection, she must decide who she can trust before it's too late. Was her marriage built on love? Or was she merely a part of a carefully crafted lie?

"He's gone, Elizabeth," her captain Charles Johnston tells her. Elizabeth blinks back her tears. Her face full of shock and disbelief. Her frozen stare interrupted by his words. "He left his badge." "There's no way," she thought. He wouldn't leave her like this. No warning, no phone call, no letter. She was more to him than that or at least so she thought. That conversation has plagued her for 3 years. For 3 long years, Detective Elizabeth Ryan tried to shut out him, to finally be able to move on. But just as she does, he abruptly returns seeking more than what either of them anticipated. Will Elizabeth be able to forgive him, or will the past be too much to swallow? What happens when life throws her too many twists to handle?

With the sudden death of his sister, detective Dawson Wills was going to give everything to find her killer, he wanted to do it alone. To find and make the killer pay for causing him so much pain, but unfortunately, life doesn’t always give you what you desire. Dawson was giving a partner, one of the things he disliked as a detective. Jane Johnson was Dawson's dream woman, how would Dawson maneuver his way from falling in love with this beautiful woman who was now his partner and finding his sister’s killer? He dislikes having partners, but detective Jane was too beautiful to be disliked….

An undercover special agent is up for at an auction upon receiving intel that the Rios Mafia’s new boss is looking for a wife-for-hire. Fallon Ravestreen's latest solo mission is to infiltrate and ruin the Rios Mafia from the inside. But that proves as a challenge to the NBI's best agent when its new boss, Jett Rios, is proving to be fatally wicked and insanely appealing. Locked in a contracted marriage until Jett gets his inheritance, the two are forced to act like a real couple while hiding daggers on each other's backs. But life works in unique ways--they become emotionally invested and their boundaries blur as their feelings get real. When Fallon reveals the deepest, darkest secrets that happen in the Rios Mafia, will she choose her over her love? And when Fallon's cover is blown, will Jett be the first to pull the trigger at her? When their story will affect the country's future, will they still choose to be selfish?

She was abandoned on her wedding day. He was the stranger who gave her his name. But in a marriage built on secrets, how long can love survive before the truth tears it apart?