The Three Beths by Jeff Abbott

It's been a year since Mariah Dunning's mother has disappeared, and Mariah is stuck in a holding pattern--living with her father, and desperate to know what happened to Beth, her mom. Most people in town, including the police, feel that her father, Craig was involved, and this fact has further ostracized them in the community. When a friend from high school mentions on his true crime blog that another woman named Bethany Curtis went missing six months before Mariah's mother, Mariah decides to delve into Bethany's case. Soon, Mariah finds herself immersed in both Bethany's mother's and husband's lives. Will it turn out that the Beth's vanishings are related? If so, what does that mean for Mariah and her father? The Three Beths is a great read-alike for people who enjoy Harlan Coben and Linwood Barclay.