Solution:
When the intruder threatens Gerrard, Gerrard cools himself and makes a plan to get rid of this problem. He claims to be a murderer who is also wanted by the police. Gerrard calls himself the Mystery Man, who has been not found by anyone. Thus, Gerrard convinced the intruder that he won't get anything by taking his identity. Telling this story, Gerrard convinced the intruder for not killing him.
