Although you possibly haven't read this play or seen it performed in the theatre chances are you have seen its more popular incarnation these days, the classic Arthur Askey movie Ghost Train [DVD] , which was based on this.
If you think the name of the playwright sounds familiar, then you would be right, Arnold Ridley first came to public attention due to this play but is better known these days as Godfrey in 'Dad's Army'. There is a story of how he came to write this play. He had been to the theatre to see an American play which he thought was pretty dire and decided that he could do better than that; he also had been stranded overnight in a station waiting room, so he wrote this. I don't know how often this play is put on these days, but when it was first performed in 1923 it had a run of two years, and became a staple of many an acting troupe.
The story is more or less the same as the film, which you may possibly have seen, but there is no comedy like that which was created for Arthur Askey in the movie. Here the person, Teddie, who stops a train due to losing his hat is played as a buffoon, with a secret. The whole play which is three acts long is all staged in the waiting room. As audiences found back in the Twenties this play is absorbing and will grab your attention, and is well worth reading.