4/4 The Doctor must follow the Master back to 20th century Heathrow.
BBC One Wales
BBC One except Wales
3/4 From within their sarcophagus, the gestalt Xeraphin are communicating through Nyssa.
2/4 After an encounter with the Plasmatons, Nyssa is possessed by strange aliens.
1/4 Concorde disappears back through a crack in time, so the Doctor follows its trail.
4/4 The Doctor realises the freighter is now a huge bomb, with one passenger still aboard...
3/4 The Cybermen are released from their silos and are on the march.
2/4 With her crew slowly vanishing, Briggs assumes the Doctor to be the guilty party.
1/4 Deadly androids are protecting a bomb buried beneath the Earth.
2/2 The Doctor stands accused, despite Lady Cranleigh knowing he is innocent.
1/2 The Cranleighs invite the Doctor to a ball, but a masked killer hides in plain sight.