After realizing what just happened, Tom started to worry. His fear was mounting when he realized that Gatsby could possibly use his connections and anger to take care of Tom. It would only be a matter of time before Gatsby learned about the death of his former love. His power throughout the West Egg controlled the fears of Tom Buchanan. He understood what Gatsby could do if and when he wanted to.
At this hour of the night, Tom's drunkenness was not working in his favor. His thoughts were swirling in his mind, making his emotions less stable by the minute. His intoxication was only growing through the ingestion of the rum in the bottle in his left hand. The gun in his right hand was supported by his depression.
The next day, Gatsby became worried about Daisy, thinking that Tom would definitely hurt her. He decided to venture over to the Buchanan's house, not without telling me first. Upon arrival, he reached for the front door handle, realizing that it was unlocked. He hesitated for a moment, and ventured into the house. He knew that on a normal day, Tom would be out and about at this hour. Gatsby's first sight terrorized his world. He saw Daisy, dead on the floor underneath of the elegant balcony. His mind was experiencing a plethora of negative thoughts. He then walked around the corner, confused and in search of some idea of how this could have occurred. To his astonishment, he saw the body of Tom Buchanan surrounded by blood on the floor of the dining room. A bullet had pierced his brain, leaving no part of it intact. Tom and Daisy both lay dead on the floor, Gatsby standing only feet away from each of them. He did not know what to do next, knowing that the love of his life was dead. He stumbled around the house thoughtlessly, attempting to grasp what he was currently experiencing. He then saw Daisy's daughter alone, still sleeping in her nursery, and decided to take her home with him.