The Boneless were monsters from another universe of only two dimensions. The Boneless came to our universe and consumed humans by sucking them into the walls. The Twelfth Doctor and Clara arrived in Bristol and with help from Rigsy they were able to restore the shrunken TARDIS and also banish the Boneless forever. Flatline is one of the most inventive episodes in Doctor Who‘s history.

Flatline

★★★★★

TX: 18/10/2014

Written by Jamie Mathieson  Directed by Douglas Mackinnon

The TARDIS’s exterior dimensions are shrunk by an unknown force. The Twelfth Doctor and Clara climb out of a miniaturised TARDIS and discover that they have landed in Bristol. Clara walks off briefly but returns to find that the TARDIS is now tiny with the Doctor stuck inside! Nearby, humans are being sucked into walls by terrifying two-dimensional creatures called the Boneless. The Boneless hide in the walls and their human victims appear on the walls too as murals. Clara takes charge and befriends a boy called Rigsy who is cleaning up his graffiti as part of community service. The Doctor creates a device called a 2-DIS to return objects flattened by the Boneless to their original three-dimensional state, and from three-dimensions to two-dimensions again. The Doctor realises what the Boneless are and he helps Clara, Rigsy and the other community service workers to escape from the Boneless in a train tunnel. The Doctor’s TARDIS reverts to siege mode to avoid being hit by a train. Clara positions the cube siege TARDIS behind a door and tricks the Boneless into secretly pouring their power into the siege TARDIS. The TARDIS returns to its normal size and the Doctor uses his sonic screwdriver to banish the remaining Boneless back to their universe of only two dimensions. Rigsy would later meet the Doctor and Clara again in Face the Raven.