- Jodie Whittaker (The Doctor)
- Mandip Gill (Yasmin 'Yaz' Khan)
- John Bishop (Dan Lewis)
Doctor Who — S0E77
Episode: Vastra Investigates: A Christmas Prequel
Air Date: 2012-12-17
Runtime: 3 min
Overview
Madame Vastra, accompanied by her loyal companions Jenny Flint and Strax, is called upon to investigate a Victorian murder mystery. But where is the Doctor?