I lived in a very old house with my father a very long time ago . We are a family with $3$ members , and my mother had died long ago.
We have now shifted to a new house , since the old house became too old and we have decided to sell it at some point . Right now no one lives in the house .
One day I was watching the news when I saw that a dead body of a girl was found buried in the garden near our our old house !! . The police found the body and said they will soon start to investigate .
I immediately called my father (who was living in another room) and we had the following conversation :-
Me :- Are you watching the news?
Father :- No, why what happened?
Me :- A dead body was found buried near our old house we lived before !!
Father :- What, are you serious? That's so scary . Who could have done that?
Me :- Yes , it's very scary . It gives me the creeps when I think about it !
Father :- Yeah it definitely does . I wonder who buried her near our house .
Me :- The police are investigating about this case . I Hope they find the murderer soon .
Father :- Yeah I hope so too.
For a second I wasn't aware of something . But now I immediately understood that my father is the killer and called the police, who arrested him very soon.
What made me think so?