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The Big Balloon
Episode number: 1
Unwelcome Visitor
Episode number: 2
One Free Man
Episode number: 3
Experiment in Death
Episode number: 4
Black Warning
Episode number: 5
In Your Own Back Yard
Episode number: 6
Witch Doctor
Episode number: 7
And No Birds Sing
Episode number: 8
A Sudden Change of Programme
Episode number: 9
It's Better To Know
Episode number: 10
A Source of Contamination
Episode number: 11
Good Clean Fun
Episode number: 12