Hello,

According to the 9th standard English chapter- "If I Were You", Gerrard cooks up a story to trap the intruder that enters his cottage with a revolver in his hand. The intruder's plan was to kill Gerrard and assume his identity. Just then, Gerrard tells him that he himself is a criminal. Police is coming to arrest him. He proposed to escape together. Then, the telephone bell rang, and Gerrard told the intruder about the warning of the police heading towards the cottage. Gerrard then opened the door and asked the intruder to see for the police on the road. When the intruder leaned forward to see out, Gerrard immediately pushed him into the cupboard and slammed the door and locked it. He then picked the intruder's revolver and kept it pointed towards the cupboard. In this way, Gerrard trapped the intruder.

Hope this helps!!!