Introduced by Andi Peters.

Caterpillar Trail
What connects whales, rats, peregrine falcons and human beings?
With Nicola Davies and Stuart Bradley. Film editor Steve Scales
Production Steve Hocking

4.05pm Around the World with Willy Fog
Rigadon and Tico have to work their passage as they are treated as stowaways.
(R)

4.30pm The Movie Game
The film and video quiz with Phillip Schofield.
Taking part: Tumfurlong County Middle School, Aylesbury; Chantry Junior School, Ipswich; Stewartby Middle School, Stewartby.
Videotape editor Andy Quested Producer Christopher Tandy.

5.00pm Newsround
The news show for children.

5.05 Moondial
A drama serial by Helen Cresswell. 3: Minty desperately tries to warn the children of the arrival of a ghost-hunter in the village.
Producer Paul Stone
Director Colin Cant (R)
(Ceefax subtitles)