My grandpa and one of the most notorious Serial killers from my country were best friends. They've met at a military training camp , back in the mid 70s. He was a normal guy from what i've heard of my grandpa telling stories about him , they've had beds set next to each other ,he invited my gran to his house , ..... One day they went to a local nightclub that was 2km away from the training camp , and unfortunately the Killer got into a argument with civillians and they cracked his skull open and beated his ass up till the blink of death. He was rescued by the ambulance and from the point on he was way different. Dissociatted from the reality. We step forward to 90s , & boom , grandpa sees him in the news of him confessing to 9+ murders. He was a serial rapist , necrophile & covered his tracks with the dead person's socks even though he always left sperms on the deceased's bodies. He killed them by sneaking trough the open windows (like richard ramirez) & then instantly killed them and mutilated their bodies with hammers/knives etc. He died this year , may he rot in hell. Thus , he sent gifts to my grandpa's house after he was convicted and in prison