I don't know how true this story is because I've only ever heard it third hand, via my mum and her friend. I grew up alongside the two children of this friend and it was one of the relatively rare situations of the two mums' friendship being the primary one and us kids being thrown together and never really getting on.
Mostly because of age differences. The doom laden fourteen year old brother was four years older than me and the sister was a seven year old who put on a baby voice and pretended to be much younger than she was. I was around about ten and no doubt was found just as unsuitable a companion by both of them.
The two Dads contrived never to meet at all if possible.
An odd dynamic to say the least.
The boy later joined some kind of obscure army unit and was heard of years later in Northern Ireland.
This now grown up brother was a kind of shifty sort who, "Infiltrated" a paramilitary unit - no idea which side - with a fake girlfriend who didn't know she was a fake, a made up identity and the rest.
Anyway, he was unsurprisingly rumbled and was in other kinds of trouble with the army and got kicked out in the end. Allegedly.
It was all a bit garbled and resembled the plot of The Crying Game in parts. Minus Dil's big reveal in the middle.
(The bit where everybody quietens down and starts concentrating again when they were on the point of screaming at the terrible false Irish accents, Miranda Richardson's wig and the ridiculous casting of Forest Whittaker as the American put in the film to make it sell in the US.)
I do have other friends in the British military these days and they've scoffed at the idea being plausible. We knew things of that nature did or possibly still do go on, We just didn't think he was ever part of them.
The pub argument about the rubbish spy/Crying Game plot usually used to move on to somebody in the group being adamant that in their memory, Cathy Tyson played Dil and being corrected that they were getting mixed up with either, "Mona Lisa" or, "Band Of Gold" for obvious reasons that I sharn't spoil in case some of you would like see a terrible film from 1992 for the first time in 2026.
Then it would move on to me being sure that Paul McGann was the male lead when it was actually Stephen Rea. "Any relation to Chris Rea?"
Then we'd get another round in.