A true ghost story(Pisacha)

I took a train to jaisedeah junction with my family .The train started from patna at around 9 pm and reached jaisedeah junction at after midnight .Suddenly it stopped somewhere on small station at Jhajha junction in Jharkhand state .

I was casually looking out of window .The platform was little lighted and on the adjacent tracks there were no trains .Very few people were there on the platform and everything looked very mysterious  . Suddenly i saw a small shadow on the platform . It was a a moving shadow , but shadow was not forming on ground .

Shadow was in air . It looked like a small dog . While moving it felt like it took different shapes .

I saw the light source near platform from inside the train , there was nothing in the way which can cause such a strange shadow . Suddenly two man were about to cross , a man suddenly stopped near the shadow as if he had seen something . The accompanying man told him something and they moved nearby the shadow . The three dimensional shadow was moving very fast around an area . It used to start a center of an are and move as if dog which is in pain restlessly . Sometime it appeared as small child . 

I became little skeptical and told my brother to see out and concentrate if he can see something unusual on the platform . He concentrated a little and he told yes i can see a moving three dimensional shadow like a child , which changes form to dog and some big animal . Only the caricature of it is visible .

We started to watch the shadow very deeply . I got a little afraid and  put curtain on the glass window of train . But due to curiosity i started seeing it after sometime 

After around ten minutes , i saw shadow was not there and there was a train on adjacent platform . I became sure that it was something related to physics . There must be something moving in the path of light and air made it move like that . Since the train came in the path of light so shadow disappeared .

I started seeing people getting down from train . It was around midnight .Suddenly i saw something moving parallel to the train . A human shadow of around 8 feet completely in air was running across the train . It passed through the human bodies and was running continuously . People were not able to see it . I asked my brother he also saw the same thing which i was seeing . It was bend from shoulder , height as much as Indian train  .

This was perhaps a pisacha , of such height . May be it would have died on platform . It was very difficult for me to take it out of my memory what i had seen that night .