Shari Lapena's debut thriller delivers exactly what its cover promises: a fast-paced domestic suspense that will keep you flipping pages well past bedtime. When six-month-old Cora goes missing from her crib while parents Anne and Marco attend a dinner party next door, what begins as every parent's worst nightmare quickly spirals into a web of secrets, lies, and betrayals that implicate everyone involved.

Lapena excels at crafting a plot that zigs when you expect it to zag. Just when you think you've figured out who took baby Cora, another revelation sends you spinning in a different direction. The pacing is relentless—short chapters and cliffhanger endings make this genuinely difficult to put down.

The author also nails the claustrophobic atmosphere of a tight-knit neighborhood where everyone knows everyone else's business, or thinks they do.

However, character development takes a backseat to plot mechanics. Anne and Marco feel more like chess pieces than fully realized people, and their marriage troubles—while central to the mystery—never feel particularly authentic or emotionally resonant. The dialogue can be clunky, with characters often stating things they would naturally know rather than speaking like real people.

Lapena also relies heavily on coincidence to drive her plot forward, which may frustrate readers who prefer their mysteries more tightly constructed. The book works best for readers who prioritize page-turning suspense over literary depth. If you're looking for a beach read or airplane book that will completely absorb you for a few hours, this delivers. Fans of domestic thrillers who enjoyed 'Gone Girl' or 'The Girl on the Train' will find familiar territory here, though Lapena's prose lacks the psychological sophistication of those novels. Skip this if you prefer character-driven fiction, literary writing, or mysteries that play fair with clues. The final revelations, while surprising, may feel unearned to readers who like to solve puzzles alongside the detective. But for pure escapist entertainment with genuine surprises, 'The Couple Next Door' succeeds admirably.