The Uninvited Guest

      Thomas, the Private Investigator decided to go to Friday Island for a holiday. He stayed in a budget hotel. The hotel had four levels; and levels 3 and 4 were all single rooms. Thomas stayed in room 404.    

     After a long day of sight-seeing, Thomas decided to take a hot bath and call it a day. He was walking to the bathroom when he heard a knock at the door. Suddenly it was opened and a head looked in. He was shocked to see Thomas.

    “Sorry, I thought this is my room!” he said and showed 

Thomas his key tag, with the number 304.

    “No, this is Room 404!”

“Sorry!” The door was closed before Thomas could ask more.

    

     Thomas stared at the closed door for a while. Then he quickly called the front desk.

    

     “Hello, I want to report someone from Room 304 who is ransacking rooms in the fourth level!” he said.

   

     Soon, the hotel security guards apprehended the man. 

They discovered stolen items such as laptops and 

smartphones, as well as wallets and jeweleries. They also

found a copy of all the keys to the room in levels 3 and 4.

How did Thomas know the man was actually a thief?

If you think you know the answer, please feel free to write your though so in 

the comment box.