by Malcolm Hulke
When Britain's early warning radar defence system begins to fail intermittently, Steed and Mrs. Peel are charged with the task of finding out what is causing it. They follow the trail to Doctor Marlow, who has devoted his entire life working on the improvement of radar - but Marlow died four weeks ago, and is now buried in a graveyard. Steed investigates the hospital where the Marlow died, a place run exclusively for the benefit of railway men. While Mrs. Peel goes under cover as a nurse, Steed meets Sir Horace Winslip, the eccentric financier of the hospital, and discovers that he is being duped as part of a plan to disable the country's entire defence system using jamming-devices hidden in coffins…
Patrick Macnee (John Steed), Diana Rigg (Emma Peel), Ronald Fraser (Sir Horace Winslip), Paul Massie (Johnson), Caroline Blakiston (Miss Thirlwell), Victor Platt (Sexton), Charles Lamb (Fred), Wanda Ventham (Nurse Spray), Ray Austin (Baron), Steven Berkoff (Sager), Bryan Mosley (Miller), Lloyd Lamble (Doctor Marlow)
Directed by Quentin Lawrence
Produced by Julian Wintle
UK: 9th October, 1965
*Featuring John Steed and Mrs. Emma Peel
* The tag scene: Steed and Mrs. Peel ride off on Sir Horace's miniature train...