nine o'clock in the morning
He hurried out , and was off to Butler 's house , driving like mad . Things had changed greatly since last Cowperwood had talked with Butler . Although most friendly at the time the proposition was made that he should combine with Mollenhauer and Simpson to sustain the market , alas , now on this Monday morning at nine o'clock , an additional complication had been added to the already tangled situation which had changed Butler 's attitude completely . As he was leaving his home to enter his runabout , at nine o'clock in the morning of this same day in which Cowperwood was seeking Stener 's aid , the postman , coming up , had handed Butler four letters , all of which he paused for a moment to glance at . One was from a sub-contractor by the name of O'Higgins , the second was from Father Michel , his confessor , of St. Timothy 's , thanking him for a contribution to the parish poor fund ; a third was from Drexel & Co. relating to a deposit , and the fourth was an anonymous communication , on cheap stationery from some one who was apparently not very literate -- a woman most likely -- written in a scrawling hand , which read : DEAR SIR -- This is to warn you that your daughter Aileen is running around with a man that she should n't , Frank A. Cowperwood , the banker . If you do n't believe it , watch the house at 931 North Tenth Street . Then you can see for yourself .