Summery of the the third level

The story revolves around a 31 year old man named Charley, who experienced something weird. One day after work coming from the Subway, he reached the third level of the Grand Central station (which doesnt actually exist). He reminisces the entire experience with his psychiatrist friend Sam. Charley thought he experienced time travel and had reached somewhere in the eighteen-nineties, a time before the world saw two of its most deadliest wars. As soon as he realised what time he is in, he immediately decided to buy two tickets to Galesburg, Illinois; one for himself and the other for his wife. Unfortunately, the currency used in that century was different. Thus, the next day he withdrew all his savings and got them converted even if it meant bearing losses. He went looking for the third level but failed to find it. It worried his wife and the psychiatrist Sam who told him that he is hallucinating in order to take refuge from reality and miseries of the modern world which is full of worry. Charley thus resorts to his stamp collection in order to  distract himself when suddenly one day he finds a letter from his friend Sam who had gone missing recently. Sam wrote that he always wanted to believe in the idea of third level and now that he is there himself, he encourages Charley and Louisa to never stop looking for it.