Another example of a spoof is U.S. mystery writer Lawrence Block 's novel The Burglar in the Library ( 1997 ) .
A spoof at the same time shows that the borderline between serious mystery and its parody is necessarily blurred .
Another example of a spoof , which at the same time shows that the borderline between serious mystery and its parody is necessarily blurred , is U.S. mystery writer Lawrence Block 's novel The Burglar in the Library ( 1997 ) .