[Serious] What do you think is the creepiest/most disturbing unsolved mystery ever?

The Nicholas Barclay case. I was 13 when I first heard of it and it’s always been on my mind.Nicholas went missing and three years later someone called from Spain and claimed to have found him. His sister went to pick him up from Spain and took him home.He looked nothing close to the real Nicholas and for the family to just take him in without acknowledging how different he looked was quite suspicious on their side.

(Another suspicious thing I also heard from a podcast that his sister brought a family album with her to show him his relatives during the flight back. I don’t know about you but if I ever went missing even for years I would remember the people related to me)

/r/AskReddit Thread