Katie Sise’s You Must Be New Here is a gripping, character-driven suspense novel that takes the seemingly peaceful backdrop of suburban life and steadily unravels it into something darker and far more unsettling.

At the heart of the story is Sloane Thompson—a single mother who appears to have her life in quiet order. She’s devoted to her daughter Daisy, balances school commitments, and even maintains civility with her ex-husband. Yet beneath this surface, she longs for a deeper connection, someone she can truly confide in. That yearning is fulfilled when Harper Wilson and her husband move in next door. Harper’s charisma, boldness, and intensity quickly draw Sloane into an all-consuming friendship, one that feels both exhilarating and dangerous.

The central mystery begins when Daisy’s reliable babysitter, Margaret, suddenly vanishes without explanation. What starts as mild concern quickly escalates into a nerve-wracking disappearance that grips the entire community of Sycamore Glen. Sise masterfully ratchets up the tension, peeling back the layers of seemingly idyllic suburban life to expose secrets, betrayals, and hidden motives.

What makes this novel stand out is its dual strength in psychological depth and suspenseful plotting. The friendship between Sloane and Harper is just as compelling as the mystery itself, raising questions about trust, dependency, and how well we truly know the people living closest to us. The characters feel real and flawed, which makes their decisions and fears all the more believable.

Sise’s writing is brisk yet immersive, keeping the pages turning while still offering sharp observations about motherhood, loneliness, and the masks people wear in small communities. The final revelations are both surprising and unsettling, cementing the novel’s place as a solid addition to the domestic thriller genre.

Verdict:
You Must Be New Here is a dark, twisty, and emotionally charged thriller that will appeal to fans of Liane Moriarty and Lisa Jewell. It’s not just about the mystery of a missing woman—it’s about the fragile bonds of friendship and the dangerous secrets lurking behind manicured lawns and friendly smiles.

⭐️⭐️⭐️⭐️ (4/5)