Question

who actually was knocking at the door why did he come there​

Answer 1

a waiter was actually knocking at the door.He has came there to serve the drink that was ordered by ausable

Answer 2

A waiter was knocking at the door because he came to serve the beer which was ordered by Ausable for his visitor.

In this story ‘’mid night visitor’’ Ausable was a secret agent and he was expecting to receive an important paper that night. A writer named Fowler came to visit him to get some inspiration.

But an intruder named max came to his room and threatened both with a gun point to get the important documents. But sudden knock at the rock made him think that it was a police.