4.1 Burning Bright When carol singers on the runway bring down a plane, Torchwood investigate.

4.2 Chariot of Fire The race is on to stop the world ending at midnight. Norton has it all under control.

4.3 The Invisible Worm In Moscow, the true power of Ascension is revealed.

4.4 We Have Built Jerusalem It's up to Lizbeth, Andy and Gideon to save the world now.

4.5 Dark Satanic Mills Come on holiday, all ye faithful! What is going on on Salisbury Plain?

4.6 Fearful Symmetry As the net tightens, does the human race have one last use for Torchwood?