See 23Introduction - K9's Pedigree
1 - K9's Travels Part I
2 - Inside K9
3 - K9's Travels Part II
4 - K9 Out of Sequence
5 - K9 Defuses A Bomb
6 - K9's Travels Part III
7 - A Maze For Doctor Who
8 - A Space Puzzle
9 - K9's Travels Part IV
10 - Mysterious Parts
11 - A Solar Puzzle
12 - Make Your Own K9
13 - Other Mechanical Marvels Part I
14 - Spot the Mechanoid Difference
15 - Other Mechanical Marvels Part II
16 - A Tardis Puzzle
17 - Dr Who's Gravity Probe
18 - The Giant Robot That Grew
19 - Other Mechanical Marvels Part III
20 - Find the Right Trail
21 - Other Mechanical Marvels Part IV
22 - Quiz Answers