I know Peyton did not kill him.
I'm rewatching the show right now. Travis died from an overdose from the painkillers Peyton's mother Lucille gave him.
It's on Youtube? I use to really like the show back in the day.
It seems so. I myself downloaded a torrent some years back.
Why did Travis OD?
She gave him a higher dosage than intended. She just wanted him to pass out.
Was it her way of payback for hurting Peyton?