Jo and Mark are working the "outraged husband" racket when they fall foul of the sinister Kleinie....

The manager of a halfway house for female ex-cons takes action when a blackmailer threatens to expose her secret.

Pringle, leader of the Brotherhood, recieves an anonymous letter accusing his wife of adultery. He employs a private investigator, Caulfield, who discovers things are not quite that straightforward. Joe Orton's last play for television: a farce.

The TARDIS arrives in a desolate future London, where the Doctor discovers his old enemies the Daleks have taken control of Earth.

A look at the making of the Doctor Who story 'The Dalek Invasion of Earth' (1964)