"it is a mystery to me why he did it" in German It is a mystery to me why he did it. Es ist mir rätselhaft/schleierhaft, warum er das getan hat. Detailed translations for "it is a mystery to me why he did it" It is a mystery to me why he did it. It is a mystery to me why he did it. Es ist mir rätselhaft/schleierhaft, warum er das getan hat.