This episode finds the Doctor (Jodie Whittaker), Yaz (Mandip Gill) and Dan (John Bishop) in 19th century China, where a small coastal village is under threat – from both the fearsome pirate queen Madame Ching (Crystal Yu) and a monstrous alien force which she unwittingly unleashes....
Follows Morgan, a single mother of three with a brilliant mind, as she rearranges some evidence during her shift as a cleaner for the police department, aiding in the resolution of an unsolvable case....
