A midnight knock.An envelope stained with blood.A message that reads only: She will be next.Arif Khan's quiet life as an accountant shatters the night a mysterious knock echoes at his door. What begins as a strange delivery spirals into murder, betrayal, and a deadly hunt across a small town filled with secrets.As neighbors whisper, police close in, and bodies begin to fall, Arif realizes he is trapped in a nightmare where every knock could be his last. With Inspector Reyaz watching his every move and the mysterious widow Shabnam holding secrets from the past, Arif must uncover the truth before he becomes the next name on the killer's list.A Knock at the Wrong Door is a gripping psychological thriller that blends suspense, small-town mystery, and relentless twists. Perfect for fans of Paula Hawkins, Gillian Flynn, or Indian noir thrillers, this novel asks one haunting question: