You can discover everything about a person by showing them a dead body.
Are they a worldly soul? Confident in the face of new challenges? Have they ever been in love? Do they keep weapons in the house? What is their career? Do they believe in fate? Do they believe in an afterlife? Or God? The law of retaliation?
You learn most if the corpse belongs to someone they know. Watch the person, watch the body, and you will know. You will find out if you can take them too.
He was the first man I killed whose gun still had all the bullets.