Therefore, I did look out, and saw him enter the doorway beneath.

In due course I heard him arrive at Mrs.Lester's door--that is, I assume it was he.

Five minutes later Bates and I heard him depart.
To make sure, I looked out a second time.

If you ask me why I behaved in that way I cannot tell you.

I have occupied this flat during the past five months, and I have never previously, within my recollection, lifted a window and gazed out to watch anybody's comings and goings.