The Forgotten Son original opening was the original preface to the novel The Forgotten Son by Andy Frankham-Allen. It did not appear in the novel, but was published in Lethbridge-Stewart: Top Secret Files.
- Chorley uses an iPad.
- Frankham-Allen stated that this preface was cut from the novel because it would've been "one too many introductions".
- The Brigadier stops Chorley from drinking the extra brandy, because it's for a special friend. This is a reference to TV: The Wedding of River Song.
- Chorley notices there's been an alien encounter at least once a year, usually around Christmas. (TV: The Christmas Invasion, The Runaway Bride, Voyage of the Damned, et al)
- The Brigadier says the story begins when he was brought back from Libya at the request of Colonel Pemberton. (PROSE: The Ambush!, TV: The Web of Fear)
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