When I was 15 years old I was admitted to a well known hospital in Mumbai, for an operation to be performed on my leg. I stayed there for around one and a half month.
I used to stay there in a dormitory on a last corner bed near the window. In that same dormitory there was a man, 40 to 45 yrs, wheelchair bound, living there for 3 months. He once told us about the paranormal incidences which he had experienced, but was interrupted by a nurse which silenced him for which she knew that he was telling us about his paranormal experiences. I knew that he was trying to scare other inmates, so I ignored the man and went to my bed.
One fine night as usual I was preparing to sleep at 12 o clock. At that night, I closed the window which remains open all the time and I slept. At around 3 or 3:30, I felt that someone is whispering in my ears. That woke me up from my sleep. I confirmed it by checking my dormitory room and I also checked under my bed to make sure that my other inmates are not playing a prank on me, but I noticed all were sleeping. So I tried to sleep again at 4 o clock. I heard loud noise like someone was banging my metal door of my metal cupboard beside my bed, and my bed was shaking. I got up, totally frightened, this time I was damn sure that someone is under my bed. To my surprise all my inmates were sleeping, the room was locked from inside so no one could have possibly entered the room. I noticed the room was colder as compared to other nights. I opened the window besides my bed so I can fell better, within minutes room came back to normal temperature.
I stayed awake after that, strongly believing that something is still there under my bed. At around 6 o clock there was sunlight, one of the inmate of my dormitory woke up, and I checked beneath my bed, there was nothing.
That same day I personally asked the man about his paranormal incidences. To my fear he told me the same story, what I have experienced the previous midnight. He told me he saw a black apparition roaming in the hallway, entered the dormitory and the temperature of the room fell suddenly low. After roaming for sometime the apparition escaped through the same window besides my bed.
When I was leaving that hospital I came to know that many inmates and the staff noticed the dark apparition in dorm, elevator, hallway, washroom.
It's been 10 years for that incident. I am a doctor now. I myself doesn't believe in ghosts but what happened that night puts a question mark on my medical, rational explanation until date...