I know this is going back a few years but, i'm just wondering about the sudden disappearance of contestant Yvonne who was on the wings for the last 3 shows of Season 4, but mysteriously disappeared at the start of Season 5 and never returned (She stood in E3, had long-ish dark brown hair, had what sounded like a very thick Glasgow accent, looked like she was in her late 30s/early 40s and was replaced by Heather on the first show of S5)
I also seem to remember her behaviour in her 3 shows she was there - She seemed pretty happy and part of the group in Irene and Cyril's when she was chosen to open her box (of course, being a non-playing contestant she had minimal camera exposure, although they did do a close-up of her smiling after she revealed the £100k in Cyril's game after he dealt).
But she did seem a bit different in Calum's game - She didn't seem too happy when she was asked to open her box and sighed "You deserve to win big money" in an unhappy-sounding way, and if you watched closely at in the end credits when all the other contestants joined Calum at the table, Yvonne left the wings last and instead of joining the others at the table, she just seemed to walk past the group around the table and out the door!
(So there were obviously signs in Calum's game that she knew she was leaving by then)
I'm still curious as to exactly why Yvonne left and didn't return, i remember seeing speculation on here that she was kicked off as she went on Golden Balls (and won £20,000 or something on there) before coming to DoND, which might seem a bit far-fetched for her to be kicked off for being on another game show (You don't get that with other shows like 'The Chase')