unsure of whether the characters should be amateur or professional actors. "The Harrowing" was the writers' attempt to produce a gothic horror episode. They made use of more horror tropes than previous episodes, but the setting allowed them to include modern elements. The BBC ordered a second series of Inside No. 9 before the first episode had aired. The second series was written in 2014, and then filmed from the end of 2014 into early 2015. The writers were permitted two sets for the second series, and so a fake train compartment and a fake flat (for "La Couchette" and "The 12 Days of Christine" respectively) were built at Twickenham Studios. The other episodes were filmed on location; for example, "The Trial of Elizabeth Gadge" was filmed in a barn at the Chiltern Open Air Museum. David Kerr was unable to stay on as director for the second series. Guillem Morales and Dan Zeff each took on directorial duties for two episodes, and Pemberton and Shearsmith, in addition to continuing to write and star in the episodes, jointly directed the other two. The writers had hoped to direct for some time, and this represented a good opportunity to make their directorial debut. While writing for the series, the pair did not know which episodes they would be directing; in an interview, Shearsmith said that the pair had considered directing episodes in which they did not appear much, but scheduling concerns left them with "Cold Comfort" and "Nana's Party"; the episodes feature the writers quite heavily. The six episodes of the second series derived inspiration from a variety of sources. "La Couchette" aimed to explore the intimacy of sleeper carriages; specifically, the unusual problems associated with sleeping in close proximity to strangers. "The 12 Days of Christine" follows a woman over the course of 12 years, with scenes displaying key moments in her life. "The Trial of Elizabeth Gadge" was inspired by genuine witch trials, some transcripts of which Pemberton and Shearsmith had read as part of the writing process. "Cold Comfort" began with the idea of a call centre, and was filmed in the style of a CCTV feed. With "Nana's Party", the writers aimed for a feeling of suburban darkness, reminiscent of the work of Alan Ayckbourn. "Séance Time" began with the idea of a séance, an idea the writers had wanted to explore for some time. A third