When Hong - joo excuses herself to go home thinking that she had left the door at their house ajar , Yoo - beom drives Hong - joo 's car .
This leads into an accident that killed a policeman .
When Hong - joo excuses herself to go home thinking that she had left the door at their house ajar , Yoo - beom drives Hong - joo 's car and this leads into an accident that killed a policeman .