A police officer was patrolling the streets. Suddenly, he hears a female screaming from a nearby house:
"Don't kill me, John! Don't kill me!"
The officer rushes to the house. Upon entering the living room, he observes a dead woman on the floor. A smoking gun lies next to her.
A pilot, a plumber and a farmer is also in the room.
Without hesitation, the police officer arrests the pilot.