[Susan Foreman]

Breakdown of the contents of the 'Galaxy 4' release:

DISC ONE: B&W 1.33:1
Episodes with Surviving Episode Three "Air Lock" (Play All - 99:17):
- Episode One: "Four Hundred Dawns" (23:06)
- Episode Two: "Trap of Steel" (25:51)
- Episode Three: "Air Lock" (24:22)
- Episode Four: "The Exploding Planet" (25:58)

All animated episodes (Play All - 100:18):
- Episode One: "Four Hundred Dawns" (23:06)
- Episode Two: "Trap of Steel" (25:51)
- Episode Three: "Air Lock" (25:22)
- Episode Four: "The Exploding Planet" (25:58)

* Audio commentary 1: actors Maureen O'Brien (1, 4) and Peter Purves (1, 4), vision mixer Clive Doig (2), special sound designer Brian Hodgson (2), assistant floor manager Sue Willis (3), actor Lyn Ashley (4) and moderator Toby Hadoke (1-4)

* Audio commentary 2: Gary Russell (1), animation producer / director (4) Chloe Grech, moderator Toby Hadoke (1, 4)

* Audio commentary 3: Maureen O'Brien (3), Peter Purves (3) and Lyn Ashley (3)

Surviving Original Episode Three (24:22)
Surviving Original Episode One Clip (with optional commentary by Maureen O'Brien, Peter Purves and Lyn Ashley) (6:04)

Photographic Reconstructions:
- Episode One: Original Audio (22:36) / Narration Audio (22:36)
- Episode Two: Original Audio (25:13) / Narration Audio (25:13)
- Episode Four: Original Audio (25:26) / Narration Audio (25:26)

DISC TWO: Colour 1.78:1
Episodes (Play All - 100:18):
- Episode One: "Four Hundred Dawns" (23:06)
- Episode Two: "Trap of Steel" (25:51)
- Episode Three: "Air Lock" (25:22)
- Episode Four: "The Exploding Planet" (25:58)

* Audio commentary 1: actors Maureen O'Brien (1, 4), Peter Purves (1, 4), vision mixer Clive Doig (2), special sound designer Brian Hodgson (2), assistant floor manager Sue Willis (3), actor Lyn Ashley (4) moderator Toby Hadoke (1-4)

* Audio commentary 2: Gary Russell (1), animation producer / director (4) Chloe Grech, moderator Toby Hadoke (1, 4)

'The Trouble with Chumblies: Making Galaxy 4' (38:23)
'Finding Galaxy 4' (20:27)
Photo Gallery (3:47)
Trailer (0:59)

BD-ROM:
- Scripts: A full set of camera scripts (PDF)
- Radio Times Cuttings: Publicity material and billings from the BBC listings magazine (PDF)