I looked round, rather expecting to see Mr.
Weiss, but, as he made no appearance, I entered the carriage.

The door was immediately banged to and locked, and I then heard the heavy bolts of the gates withdrawn and the loud creaking of hinges.

The carriage moved out slowly and stopped; the gates slammed to behind me; I felt the lurch as the coachman climbed to his seat and we started forward.
My reflections during the return journey were the reverse of agreeable.
I could not rid myself of the conviction that I was being involved in some very suspicious proceedings.

It was possible, of course, that this feeling was due to the strange secrecy that surrounded my connection with this case; that, had I made my visit under ordinary conditions, I might have found in the patient's symptoms nothing to excite suspicion or alarm.

It might be so, but that consideration did not comfort me.
Then, my diagnosis might be wrong.