Inferno (4)

May 30, 1970 on BBC One at 5:15 PM
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Summary

In a parallel England, the Doctor tries desperately to convince his captors of the immense peril they are in. But they are convinced he is a spy. And penetration zero is getting close…

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Inferno (3)
Season 7 Episode 21

May 23, 1970

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Inferno (5)
Season 7 Episode 23

Jun 06, 1970

Guest stars

Christopher Benjamin, Derek Newark, Ian Fairbairn, John Levene, Nicholas Courtney, Olaf Pooley, Roy Scammell, Sheila Dunn