1 Terror of the Zygons: The Destruction of Charlie Rig
2 Terror of the Zygons: A Landing in Scotland
3 Terror of the Zygons: Murder and Mystery on Tulloch Moor
4 Terror of the Zygons: Wreckage
5 Terror of the Zygons: The Zygons Attack
6 Terror of the Zygons: Decompression
7 Terror of the Zygons: The Zygons' Ultimate Weapon
8 Terror of the Zygons: Trance
9 Terror of the Zygons: False Harry
10 Terror of the Zygons: Monster on the Moor
11 Terror of the Zygons: Death at the Inn / Hunt for a Zygon
12 Terror of the Zygons: The Secret of Forgill Castle
13 Terror of the Zygons: Ascent and Descent
14 Terror of the Zygons: A Call from the Prime Minister
15 Terror of the Zygons: To London / Death of Broton
16 Terror of the Zygons: The Monster Goes Home
17 Terror of the Zygons: Return Ticket
18 The Seeds of Doom: Antartica: The First Pod
19 The Seeds of Doom: It's Growing
20 The Seeds of Doom: Harrison Chase
21 The Seeds of Doom: The Pod Opens
22 The Seeds of Doom: The Galactic Weed
23 The Seeds of Doom: The Creature Attacks
24 The Seeds of Doom: A Plan for Murder / Hunt in the Snow
25 The Seeds of Doom: Sabotage
26 The Seeds of Doom: Chase Receives the Seccond Pod
27 The Seeds of Doom: The Chauffeur Takes a Detour
28 The Seeds of Doom: A Visit to Harrison Chase
29 The Seeds of Doom: The Hymn of the Plants / Floriana Requiem
30 The Seeds of Doom: Escape and Recapture
31 The Seeds of Doom: The Seccond Pod Bursts
32 The Seeds of Doom: Keeler's Transformation Begins
33 The Seeds of Doom: The Composter
34 The Seeds of Doom: The Nurturing of Keeler
35 The Seeds of Doom: "Get Dunbar!" / Krynoid on the Loose
36 The Seeds of Doom: Amelia Ducat's Theme
37 The Seeds of Doom: Molotov Coctail
38 The Seeds of Doom: "The Plants Must Win"
39 The Seeds of Doom: The Plants Attack
40 The Seeds of Doom: Laser Fire
41 The Seeds of Doom: Trapped
42 The Seeds of Doom: The Final Assault