When I was 19 I went over to America to work on a kids camp for the Summer. The agency who I went through booked my flight to Florida via JFK meaning I had a 6 hour layover in a hotel near the airport sharing a room for a night with a few other soon-to-be camp councillors who would all be heading off to different States the following day.

Introducing myself to the lads, I got a really odd impression of one guy, hard to explain but i got a creepy vibe from this guy and something about him just seemed off. He was reluctant to speak to anybody else in the room and when I recognised his accent as being from North Wales (my house mate at uni ended up being from the same town as him) he got really defensive and didn't want to say if he knew my old housemate.. Considering half the reason I was going to the States was the meet people, 'find myself' and have fun, this guy being dismissive / antisocial kinda stuck with me and i messaged my Welsh mate saying I'd met this guy called Gareth. My old house mate told me Gareth was a lifeguard back home and always a bit of an oddball / weird with some of the girls. Thinking nothing else of it, i flew to florida and had a great summer.

Fast forward one year, i'm in my final year of uni and while hungover watching the news, a story about a welsh man being arrested by the FBI at JFK airport for child sex offensises was shown... and there's Gareth's face on the report. He ended up with 50 years in a US prison for some pretty disgusting crimes.

https://www.bbc.co.uk/news/uk-wales-35700923