Kate Stewart and her UNIT team investigate and confront alien attacks on the planet Earth in the new 5-disc boxset! On the trail of missing alien technology, Kate Stewart encounters the ambitious Felicity Lyme. Who are Cerberus, and what are they doing in the London Docklands? With Tengobushi assassins on their tail, Kate and Osgood retreat to UNIT Command in Geneva. High in the mountains, Captain Josh Carter comes face to face with the enemy. As London sleeps, an alien horde rises from the shadows. The Tower has been infiltrated - and UNIT must hold the line. Caught between human greed and an unstoppable alien power, Kate Stewart leads her forces on one last mission to the Antarctic. It's UNIT against the world.