Doctor Who Monthly #83

The Doctor explains Autek's plan to create a crystal now to be harvest in the future in order to power a highly-destructive sonic cannon. The Doctor then tracks down their foes in the TARDIS and destroys the Meddler's TARDIS by materializing in the same location a millisecond before it can. The Time Meddler and his TARDIS are projected into another dimension and the Ice Warriors' ship is destroyed. After the Doctor leaves to return Gus to his home, one of the SAG 3 troops reveals that his clairvoyance has predicted Gus's death.