A day later, Gregson visits Holmes and Watson, telling them that he has arrested a suspect. He had gone to Madame Charpentier's Boarding House where Drebber and Stangerson had stayed before the murder. He learned from her that Drebber, a drunk, had attempted to kiss Mrs. Charpentier's daughter, Alice, which caused their immediate eviction. Drebber, however, came back later that night and attempted to grab Alice, prompting her older brother to attack him. He attempted to chase Drebber with a cudgel but claimed to have lost sight of him. Gregson has him in custody on this circumstantial evidence.