A wounded private investigator pursues a deadly black widow to the cozy small town of Heart Lake. Ashley Perkins takes a bullet in the line of duty and barely survives it. While on the road to recovery, she resigns from the Dallas Police Department and pursues a lifelong dream of becoming a private investigator. Her first case involves a trail of bodies—wealthy men who didn’t survive their encounter with an enterprising young woman she nicknames the Black Widow. Everyone thinks Johnny Cuba is living the dream after getting promoted at Lonestar Security and purchasing a dairy farm. He also lands in the Black Widow’s crosshairs, making Ashley fear he’s about to become her next victim. She updates her mission to include keeping the cowboy heartthrob safe, preferably while keeping things professional between them—a task that quickly proves to be easier said than done.