פתאום דפיקה בדלת הוא קובץ של 38 סיפורים קצרים מאת אתגר קרת, שיצא לאור בעברית בשנת 2010. "מרתק לפתוח את הדלת לסיפורים של אתגר קרת", כתב על הספר עמרי הרצוג בהארץ, "ונעים גם לדעת שאנשים רבים כל כך בעולם ממתינים לנקישתם".
Etgar Keret is an ingenious and original master of the short story. Radical, witty and always unusual, declared a 'genius' by the New York Times, Keret brings all of his prodigious talent to bear in this bestselling collection.
A man barges into a writer's house and, holding a gun to his head, demands that he tell him a story, something to take him away from the real world. A pathological liar discovers one day that all the lies he tells come true. A young woman finds a zip in her boyfriend's mouth, and when she opens it he unfolds to reveal a completely different man inside. Suddenly, a Knock on the Door is at once Keret's most mature and most playful work yet, and establishes him as one of the great international writers of our time.