by Roger Marshall
Steed and Mrs. Peel investigate the disappearance from the English countryside of a bird called the Martlett. After the two agents meet a birdwatcher, they discover that someone is using ‘Silent Dust’, a deadly fertiliser which kills all animals and vegetation; but the chemical has not been used since its creation, and its inventor is believed to have died after being fired from the project. Steed and Mrs. Peel find out that some rich locals are using the ‘Silent Dust’ as part of a scheme to hold the country to ransom. But when she and Steed attempt to stop them, Mrs. Peel finds herself on the wrong side in a ‘fox hunt’...
Patrick Macnee (John Steed), Diana Rigg (Emma Peel), William Franklyn (Omrod), Norman Bird (Croft), Jack Watson (Juggins), Conrad Phillips (Mellors), Hilary Wontner (Minister), Joanna Wake (Miss Snow), Isobel Black (Claire Prendergast), Charles Lloyd Pack (Sir Manfred Fellows), Aubrey Morris (Quince), Robert Dorning (Harvard)
Directed by Roy Baker
Produced by Julian Wintle
UK: 1st January, 1966
*Featuring John Steed and Mrs. Emma Peel
*The tag scene: Steed and Mrs. Peel go up, up and away in a hot-air balloon...
*Working title: 'Strictly for the Worms'