47. The Eleventh Doctor's Impossible Encounter
From: "The Snowmen"
Premiere: December 25, 2012
Embittered by the recent loss of his companions, an apathetic Doctor is roused back into action against the scheming Simeon (Richard Grant) by misfit investigators the Paternoster Gang – Silurian detective Madame Vastra (Neve McIntosh), her wife, Jenny Flint (Catrin Stewart) and Sontaran nurse Strax (Dan Starkey) – and Clara (Jenna-Louise Stewart), a Victorian governess who uncannily resembles someone the Doctor encountered recently… and someone else he has yet to meet.