Resumen

Holmes and Watson were having breakfast when a Young man called McFarlane knocked at the door. He was a suspect of murder but he said he was innocent. He tells Holmes that a rich man called Oldacre called him because he was a lawyer and he wanted to write his will. Oldacre gave everything to McFarlane in his will because McFarlanes´s parents and Oldacre were friends. Oldacre was supposed to be murdered by McFarlane because there was a walking stick which belonged to McFarlane in his bedroom. Holmes started to investigate and discovered that McFarlane´s parents weren´t friends of Oldacre. Then, he went to Oldacre´s house where the housekeeper was nervous and didn´t tell the truth. Finally, Holmes made a trick and convinced the police to shout fire in Oldacre´s house. Suddenly, a door opened and Oldacre appeared. He wasn´t dead and McFarlane was innocent.