Augusta Groner, an Austrian schoolteacher, created the first professional detective in German fiction - Joseph Muller, small, shabby, apologetic, and the finest investigator on the Vienna force. A body in the Stadtpark and a lamp that burned out at exactly the wrong hour set him on a trail he would rather not follow, for Muller's trouble is that he keeps pitying the very people he catches. This edition presents the complete and unabridged translation, newly typeset and illustrated with 30 full-page color plates.