Rescue from the Maggots
Trapped in a cave in a slag heap, Jo desperately radios for anyone to hear her. It's up to the Doctor, Bessie and Sergeant Benton to save her from the advancing toxic maggots.

A Fond Farewell
Having defeated the threat of the giant toxic insects, Jo accepts Professor Jones' proposal of marriage. But this means no more travelling with the Doctor, so the two bid each other a fond farewell.

Credit: BBC Worldwide