Pedro Antonio de Alarcón.
Summary: Parron was a robber who always killed his victims in order to avoid their identifying him. The cruelest of the cruel. One day he robbed a gypsy, but the gypsy managed to get away. No one had ever lived to identify Parron. The gypsy went to the commandant and claimed the reward for Parron.
He described Parron, who was living among the soldiers looking for the robber, Parron. The gypsy happened to be passing the company of soldiers looking for Parron, under the name of Manuel, who saw the gypsy passing and tried to shoot him. His aim was deflected by the other soldiers, and the gypsy identified Parron. Parron lamented that he knew in letting the gypsy get away alive, he deserved to pay the price. And so, Parron was finally discovered and executed.
Spanish Stories and Tales. Ed. By Harriet de Onís. The Pocket Library, 1956.