The Doctor reseals the tombs and sets up counter measures to ensure the Cybermen will not be revived again. After resetting the defenses, he discovers the Controller is still functional and flees, working with the survivors to close it into the tombs. Whilst the others struggle to do so and keep the Controller inside, Toberman sacrifices himself to close the doors, completing the circuit, and electrocuting both him and the Controller. With the rocket repaired, the expedition leaves, the Doctor and his companions bidding them goodbye. As they return to the TARDIS, Jamie wonders whether they have seen the last of the Cybermen, which the Doctor doubts. As they leave, they fail to spot a surviving Cybermat, which approaches Toberman's body.