eleven o'clock
`` One night when he went for her she could not be found . No one had seen her leave -- she had mysteriously disappeared . Mr. Isburn gave me the case . I 'll make the story short for it is eleven o'clock . '' `` I know how to get out . Mr. Cass told me . '' `` Your knowledge of a method of egress does not warrant an extension of your visit to midnight , does it ? ''