Points to be following
1.atmosphere for the plot :room seemed empty
a. loneliness and fear
b. legs began to tremble
c. suddenly in the corner of the room noticed somebody is sitting.
2. his description
a. unearthly human being
b. how could someone enter the bolted room?
a. I went near him but there is nothing
b. more frightened
c. switched on the light
e. people came in
f. there was no one
a.i realised that loneliness leads to mental hallucination