Chris and Clare race to the scene, but Chris is possessed by Skagra’s sphere. Romana creates a barrier with K9's blaster, allowing the Doctor and friends to escape, leaving Chris and Chronotis behind. Skagra, planning a mind revolution, takes over the Doctor's TARDIS. The Doctor, Romana, and Clare use Chronotis’s TARDIS to counter Skagra's control. Amid a mental battle, the Doctor, wearing a modified helmet, takes control of the mind-controlled army, saving Chris. Skagra is captured by his Ship, now loyal to the Doctor. The Doctor finds Chronotis in a coma on Shada and decides to leave his fate to the Time Lords. Back at St. Cedd's College, the Doctor and Romana return Chronotis’s room and leave in the TARDIS, promising to keep his secret.