Sea Captain
Viola and Sebastian are lookalike twins, separated by a shipwreck. Viola lands in Illyria, where she disguises herself like her brother and goes into the service of the Duke Orsino. Orsino sends her to help him woo the Lady Olivia, who doesn't want the Duke, but finds that she likes the new messenger the Duke's sending. Then, of course, Viola's brother shows up, and merry hell breaks loose. Meanwhile, Olivia's uncle and his cohorts are trying to find some way to get back at Olivia's officious majordomo, Malvolio.
Ticket Collector
Early in 1939 Sir Robert Thorndyke takes aim at Adolf Hitler with a high powered rifle, but the shot misses its mark. Captured and tortured by the Gestapo and left for dead, Sir Robert makes his way back to England where he discovers the Gestapo has followed him. Knowing that his government would turn him over to German authorities, Sir Robert goes underground in his battle with his pursuers.
Rogin
In the distant future, the Doctor, Sarah and Harry find a space station preserving the future of mankind. But the insect Wirrn have got there first...
Corporal Blake
The TARDIS narrowly avoids becoming engulfed in a cobwebby substance in space. It arrives in the London Underground railway system, the tunnels of which are being overrun by the web and by the Great Intelligence's robot Yeti. The time travellers learn this crisis was precipitated when Professor Travers, whom they first met in the Himalayas some thirty years earlier, accidentally caused one of the Yeti to be reactivated, opening the way for the Intelligence to invade again.
