1. Into The Unknown

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. 3 April 1984

When Professor Popper starts his great experiment in the school laboratory no one knows quite how it will end, but it gives Simon, his young assistant, a shrinking feeling ...

2. Descent To Danger

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. 10 April 1984

Will Professor Crabbit discover what has happened to his old friend Professor Popper and his young assistant Simon? And who are the two mysterious strangers?

3. The Monster

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. 17 April 1984

Will the two strangers steal the formula? And how can the professor and Simon escape?

4. Pursued

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. 24 April 1984

The Professor now has more problems. Will Elizabeth be able to get help and find the antidote to the shrinking pills?

5. Follow That Skate

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. 1 May 1984

How can the professor and his friends escape from the two mysterious strangers?

6. The Magic Powder

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. 8 May 1984

How can Elizabeth find a way to save the Professor and her school friends from the two crooks?