Hercule Poirot is called in to investigate a case for an insurance company regarding firstly a dead woman's body found on a moor and then a important diamond sent to the company to be insured turns out to be a fake. Poirot discovers that the diamond was bought for Arlena Marshall by Sir Horace Platt and Arlena is on her honeymoon with her husband and step-daughter on a tropical island hotel. He joins them on the island and finds that everybody else starts to hate Arlena for different reasons - refusing to do a stage show, stopping a book, and for having an open affair with Patrick Redfern, another guest, in full view of his shy wife. So it's only a matter of time before Arlena turns up dead, strangled and Poirot must find out who it is... Written by Lee Horton [email protected]

The Assassination Bureau has existed for decades (perhaps centuries) until Diana Rigg begins to investigate it. The high moral standing of the Bureau (only killing those who deserve it) is called into question by her. She puts out a contract for the Bureau to assassinate its leader on the eve of World War I.

George Lazenby steps into the role of James Bond and is sent on his first mission. For help with Draco, he must become very close friends with his daughter, Tracy, and heads off to hunt down Ernst Stavro Blofeld one more time. This takes him to Switzerland, where he must pose as Sir Hilary Bray to find out the secret plan of Blofeld. The facility is covered with Blofeld's guards as well as his hench-woman, Irma Bunt. What has Blofeld got in mind this time? Can Bond keep up this act for much longer? Are ANY Bond girls safe? Written by simon

Edward Lionheart (Vincent Price) stars as an actor overlooked for a critics' acting award, despite producing a season of Shakespeare plays. After confronting the Critics' Circle, an attempted suicidal dive into the Thames results in Lionheart being rescued by your typical paraffin/meths/turps swigging tramps. Lionheart then (presumed dead) exacts his grizzly, and quite amusing revenge on the critics who denied him his finest hour. Written by Paul Batey

The Mischief Theatre Company return as the Cornley Polytechnic Drama Society who are this time determined to ignore a BBC blacklisting by hijacking a live production of Charles Dickens' famous festive fable. Yet they struggle with studio direction and special effects, and trying to keep a professional cast at bay.

Kermit and Fozzie are newspaper reporters sent to London to interview Lady Holiday, a wealthy fashion designer whose priceless diamond necklace is stolen. Kermit meets and falls in love with her secretary, Miss Piggy. The jewel thieves strike again, and this time frame Miss Piggy. It's up to Kermit and Muppets to bring the real culprits to justice.