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The Blue and the Green, Part 1: An Apple for the Teacher
John and Stephen find themselves with two mysteries to investigate - the possibility that Stephen's new teacher Elizabeth M'Bondo is a Tomorrow Person and some worryingly accurate paintings of alien planets.
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Other episodes for this season
![The Blue and the Green, Part 1: An Apple for the Teacher](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Blue and the Green, Part 2: The Changing Picture](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Blue and the Green, Part 3: The Trojan Horse](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Blue and the Green, Part 4: Cuckoo in the Nest](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Blue and the Green, Part 5: The Swarming Season](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![A Rift in Time, Part 1: Vase of Mystery](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![A Rift in Time, Part 2: Turn of the Thumb](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![A Rift in Time, Part 3: From Little Acorns...](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![A Rift in Time, Part 4: Rise of the Roman Empire](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Doomsday Men, Part 1: Dressed to Kill](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Doomsday Men, Part 2: The Burning Sword](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Doomsday Men, Part 3: Run Rabbit Run](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)
![The Doomsday Men, Part 4: The Shuttlecock](https://image.tmdb.org/t/p/w300/hLs4QUwsJxJki39dz6f0GQZagQJ.jpg)