From The Hound of the Baskervilles by Sir Arthur Conan Doyle Last night, about two in the morning, I was aroused by a stealthy step passing my room. I rose, opened my door, and peeped out. A long black shadow was trailing down the corridor. It was thrown by a man who walked softly down the passage with a candle held in his hand. He was in shirt and trousers, with no covering to his feet. I could merely see the outline, but his height told me that it was Barrymore. He walked very slowly and circumspectly, and there was something indescribably guilty and furtive in his whole appearance. I have told you that the corridor is broken by the balcony which runs round the hall, but that it is resumed upon the farther side. I waited until he had passed out of sight and then I followed him. When I came round the balcony he had reached the end of the farther corridor, and I could see from the glimmer of light through an open door that he had entered one of the rooms. How does the setting affect the development of the theme?
A.
It establishes a sense of sadness.
B.
It creates an atmosphere of mystery.
C.
It establishes a sense of wonder.
D.
It creates an atmosphere of excitement.