'Some two months before the murder of Sir Danvers, I had been out for one of my adventures, had returned at a late hour, and woke the next day in bed with somewhat odd sensations. It was in vain I looked about me; in vain I saw the decent furniture and tall proportions of my room in the square; in vain that I recognized the pattern of the bed curtains and the design of the mahogany frame; something still kept insisting that I was not where I was.' Which of the following is causing Dr Jekyll's consternation in this recollection?

MCQs on the setting in Strange Case of Dr Jekyll and Mr Hyde.