User:SOTO/Forum Archive/The Panopticon/@comment-1293767-20151029072618/@comment-27920493-20160601132028

We should use sources to determine whether on not episodes are two-parters. On Wikipedia they have used DWM to decide which episodes are two-parters and which are not, DWM counts only "The Magician's Apprentice" / "The Witch's Familiar", "Under the Lake" / "Before the Flood" and "The Zygon Invasion" / "The Zygon Inversion" as two-parters, the other six episodes are counted as standalones, and they have Moffat's agreement and approval for this.