football coach. >> it never occurred to me that it would be anything like this. he said -- then he told me we don't know. i said, well, what? what do you mean? i said did somebody kill him? he looked at me and said we don't know keith. i can't tell you anything. >> keith saw his son just the night before, june 10th, 2012. it was 11:00 at night. >> he was going to run out to a gas station. he said i'll be right back. ive sai said i'll see you in th morning son and gave him a hug and kiss goodnight. >> he picked me up and shook me like that and said love you dad. i'll be right back. >> his body would be found a short distance away from a house party. what killed this healthy, 18-year-old was a mystery that was about to strike this small, midwest community again.