The all-time fan favourite episode of Inside No. 9 is The 12 Days of Christine, a mid series 3 episode that rocked us to our core.
Sheridan Smith
"I welled up reading Twitter when the episode went out."
Sheridan Smith is on top form as the troubled Christine, whose life seems to be accelerating – and collapsing – before our eyes.
Its emotional punch is perhaps a departure from the usual style and its place as number one puts its writers on opposite sides of the fence.
“It’s strange because it’s not particularly funny and we’re supposedly writing comedy,” says Reece. “I wish the favourite one was a funny one but the thing that gets it to number one is how moving it is.
“We tried to come up with something different,” Steve explains. “We’d had comedy, scary, historical – but we’d not done domestic drudgery.
“At its heart, this is a really moving story with a powerful performance from Sheridan.”
Each scene change marks another 13 months in Christine’s life and we see her relationships deepen and then unravel, the brutal hacks between scenes adding to a sense of confusion as though in a dream.
And Reece reveals that the life events charted - building a cot, first day at school, child getting hurt - were rooted in the writers’ own experiences.
“We had little kids at the time and those instances were really fresh in our minds,” he says. “They weren’t funny, but they were very real.”
As for the gut-wrenching twist at the end, that’s just one the audience had to stomach.
It's testament to their skill in getting the audience so heavily invested in a character they’d not met a mere 25 minutes earlier.
“The ending is probably the sharpest rug-pull that we’ve done, but people were even moved watching the takes and that’s rare,” says Steve.
But they hadn’t anticipated the response that followed.
“When the episode went out, I was on Twitter and welled up at people’s reactions,” says Steve. “People were – and still are – floored by it.
“It’s gone deep into people’s psyches and I find that so moving.”
To watch all these episodes, and the rest of Inside No. 9's superb back catalogue, go to BBC iPlayer.
And don't miss the new series, airing Monday, 10 May at 21:30 BST on BBC Two - new episodes of Inside Inside No. 9 will be released weekly, straight after the programme, exclusively on BBC Sounds