The final piece of the puzzle has arrived in the form of the Cybermen and now it is a race against time for our heroes as they are now faced with a conflict on two fronts. This week Paddy and Tricia discuss the finale of another epic story as the TARDIS crew and their UNIT allies prepare themselves to face both the ingenuity of Vaughan and the might of the Cyberman armada as they attempt to stop The Invasion.