 Raymond is questioned about any strangers seen in the past week – the only one he can recall was a young representative from a firm of Dictaphone manufacturers called Curtis and Trout – Sir Roger was considering buying one of their machines.Poirot reveals that he found a scrap of starched material in the summerhouse and theorises that it came from the dress of Bourne who is the only person in the house who has no alibi.Mr Hammond, the family solicitor, arrives and reveals that the dead man's will leaves the majority of Sir Roger's estate to Ralph – another motive for the murder.