Holmes decides to begin with some spies known to him and is then astonished to hear from Dr. Watson that one of those that he names, Eduardo Lucas, has been murdered. Before Holmes has a chance to act, Lady Hilda Trelawney Hope, the European Secretary's wife, arrives unexpectedly at 221B Baker Street. She asks Holmes insistently about the stolen document's contents, but Holmes only reveals there would be regrettable consequences if the document were not found. Lady Hilda also begs Holmes to tell her husband nothing of her visit. Holmes's spy hunt does not go well. Four days after the murder, French police arrest the probable culprit of it, a woman whom Lucas has married in Paris under an alias. She was seen in London near Lucas's house the night of the crime, but she is now useless as a witness because she has gone insane.