The Web of Caves (TV story)
From Tardis Wiki, the free Doctor Who reference
The Web of Caves was a black and white comedy sketch written by Mark Gatiss, which parodies early episodes of Doctor Who.
It stars Gatiss, David Walliams, and Paul Putner.
Alongside The Pitch of Fear and The Kidnappers, it was the second of three sketches first broadcast as part of BBC Two's Doctor Who Night on 13th November 1999.
All three sketches were later released as a special feature on Disc One of the DVD box-set, The Beginning.