Eve De Leon Allen's copy of the script was left behind in the taxi when someone found it and attempted to get in contact with the BBC to return it.
Not much was made of that, but once a picture of the script hit Reddit, someone took notice and contacted the user with the correct contact information.
There doesn't appear to be any spoilers hitting the net from the script as of yet, but we'll keep our eyes peeled.
The Neil Gaiman episode is due to air next spring and sees the Doctor and Clara (new companion Jenna-Louise Thompson) on a mysterious planet described as a band of misfits -- with obviously the/a cyberman. The episode also stars Warwick Davis, Tamzin Outhwaite (Eastenders) and Jason Watkins (Being Human), with Stephen Woolfenden (Harry Potter) directing the episode.
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