This is so weird, I still can't believed it happened.
I was visiting Hadrian's Wall, it started to rain so, on impulse, I ducked into an English Heritage property... where the Curator immediately recognised me from 30 years earlier when we were neighbours.
She left following a particularly ghastly divorce... and said she often wished she could get in touch with her former next door neighbour... to tell him how much his support had meant at the time.
The following week, I had returned home to Northants, and attended an historical lecture at Northampton Guildhall.
We had coffee before beginning, and I sat down, at random, next to a guy I'd never met... and who turned out to be... yes, you've guessed it... the missing neighbour.