The Doctor has retired to 1892 London. Despite the protests of his allies, he is determined to keep out of mankind's affairs. However, a governess named Clara has stumbled upon a plot which only the Doctor can unravel, involving the death of her predecessor in ice and the sinister Dr. Simeon, who controls monsters made of sentient snow. And there is another mystery afoot: Clara is the spitting image of Oswin Oswald, whom the Doctor saw die in the Dalek asylum...
| Production | Steven Moffat | Executive Producer |
| Directing | Saul Metzstein | Second Unit Director |
| Writing | Steven Moffat | Writer |
| Production | Marcus Wilson | Producer |
| Production | Caroline Skinner | Executive Producer |
| Directing | Saul Metzstein | Director |
| Camera | Stephan Pehrsson | Director of Photography |
| Art | Michael Pickwoad | Production Design |
| Costume & Make-Up | Barbara Southcott | Makeup Designer |
| Production | Andy Pryor | Casting Director |
| Sound | Murray Gold | Original Music Composer |
| Costume & Make-Up | Howard Burden | Costume Designer |
| Editing | William Oswald | Editor |