Doctor Who: The Talons of Weng-Chiang, Episode 3 (1977)

In the third episode of the six-part Doctor Who adventure "The Talons of Weng-Chiang," the Doctor (Tom Baker) and 19th century pathologist Prof. Lightfoot (Trevor Baxter) have determined that a prostitution ring and a horde of giant rats are somehow connected to a series of mysterious "Jack the Ripper" style murders in Victorian London. The principal villain would seem to be a Chinese Tong leader named Weng-Chiang (Michael Spice). What no one yet realizes is that Weng-Chiang is actually Magnus Greel, a war criminal from the 51st century. Written by Robert Holmes, "The Talons of Weng-Chiang, Episode 3" originally aired on March 12, 1977. ~ Hal Erickson, All Movie Guide