The Innocents was the fourteenth short story in the Short Trips anthology Short Trips: The History of Christmas. It was written by Marc Platt. It featured alternate versions of the Doctor and Susan, who had previously appeared in the Doctor Who Unbound audio stories Auld Mortality and A Storm of Angels.
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- The Doctor
- Leonardo da Vinci
- Mrs Simeon
- Park keeper
- Punk angel
- Prime Minister Harold Macmillan
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- When a woman sarcastically refers to herself as Mona Lisa, the Doctor response, "La Giaconda? Surely not..." In the real world, La Giaconda was identified as the definitive model of the Mona Lisa painting in 2005, the same year The Innocents was released.
- The Doctor and Susan travelled with Leonardo da Vinci. The Doctor took Leonardo to visit the Ore, a race who had ships which travelled by astrodynamic principles derived from the harmonies of the Spheres. This experience allowed Leonardo to master the power of flight, altering history so that humanity had developed spaceflight by the 16th century. (AUDIO: A Storm of Angels)
- The Doctor wishes he still had Badger while he surveys the mess a donkey had made in his TARDIS. (AUDIO: Auld Mortality)