Because neither she 48  her husband smoked, Mrs. Trench was surprised to see cigarette ash on her doorstep as she entered the house. When she opened the living room door, she was astonished to see a strange man fast  49  in an armchair! Taking care not to disturb him, Mrs. Trench left the house at once. She called a taxi and went  50  to the police station. When she got there, she lost no time to explain  51  had happened and added that the man must have got into the house through  52  open window. Mrs. Trench returned home  53  a police car together with two policemen. 54 it was too late: the man had disappeared. Hurrying upstairs, she went to her dressing table. She smiled with relief when she saw the only thing that the man had taken was an imitation diamond necklace that was almost  55  !