keen to explore other stories in this bottle episode or TV play format, and Inside No. 9 allowed them to do this. At the same time, the concept of Inside No. 9 was a "reaction" to Psychoville, with Shearsmith saying that the two of them had "been so involved with labyrinthine over-arcing, we thought it would be nice to do six different stories with a complete new house of people each week. That's appealing, because as a viewer you might not like this story, but you've got a different one next week." Elsewhere, Shearsmith explained that the pair returned to writing macabre stories as they "always feel slightly unfulfilled if [they] write something that's purely comedic, [as] it just feels too frivolous and light". The first story that the pair wrote specifically for Inside No. 9 was about a birthday party. BBC producers felt that this story would work as the opening episode of a sitcom, but, given the script's events, Pemberton and Shearsmith were not happy to develop the idea into its own programme. The script was consequently shelved and revisited during the planning process for the second series, becoming "Nana's Party", the fifth episode of the series and eleventh overall. During the filming Inside No. 9, Shearsmith professed excitement to be working on the programme, saying that "[b]eing in the middle of filming a third series of Psychoville would be utterly depressing". Pemberton and Shearsmith aimed for a simpler experience with Inside No. 9 than they had experienced with Psychoville, describing "Sardines", Inside No. 9's first episode, by saying that it was "just about some good actors in a wardrobe with a good story." At the time of Inside No. 9 production, the anthology series was a rare genre for British television programmes. Previous horror anthologies include Tales of the Unexpected, The Twilight Zone and Alfred Hitchcock Presents; while these would sometimes use comedic elements, they are more prominent in Inside No. 9. Murder Most Horrid followed a similar format, but was far more comedic than horrific. Other anthology-like series on British television include Seven of One and Comedy Playhouse, though these programmes lacked horror elements, and, unlike Inside No. 9, served as pilots for potential series. However, the British anthology show Black Mirror, which also features elements of comedy and horror, was very popular around the time of Inside No. 9. For Pemberton, the 1970s and 1980s