- Country: N/A
- Genres: Short
- Release: 2007-09-24
- Director: Ed Stradling
- Writers: N/A
- Language: N/A
- Stars: Bob Baker , Dave Martin , Richard McManan-Smith , Barry Jackson
- Runtime: 16 min
- Awards: N/A
- AKA: Defining Shadows , Defining Shadows (United Kingdom)
- Plot: The cast and crew of the Doctor Who story 'The Armageddon Factor' recall the making of the series.
- IMDB:tt1178547