Classic British sci-fi adventure starring Jon Pertwee. At an archaeological dig a local witch warns of a great evil and soon enough, the Master is working on a nefarious scheme.

Classic British sci-fi adventure starring Jon Pertwee. With the Doctor frozen by a mysterious energy, the Brigadier attempts to come to his aid only to encounter an impassable heat barrier.

Classic British sci-fi adventure starring Jon Pertwee. While the Master brings more followers under his spell, the Doctor warns of a great power his adversary is intent on controlling.

Classic British sci-fi adventure starring Jon Pertwee. The Master orders that a trap be set for the Doctor at the village, while a concussed Jo heads for the cavern.

Classic British sci-fi adventure starring Jon Pertwee. The Master decides that Jo is to be sacrificed to Azal, and the Doctor's rescue attempts are hampered by Bok.

Classic British sci-fi adventure starring Jon Pertwee. The Doctor pays the Master a visit in an island prison around which a number of ships have mysteriously sunk.

Classic British sci-fi adventure starring Jon Pertwee. While the Doctor and Jo are trapped on the fort by a Sea Devil, the Master steals some electronic components.

Classic British sci-fi adventure starring Jon Pertwee. Trenchard holds the Doctor captive while the Master attempts to make contact with the Sea Devils.

Classic British sci-fi adventure starring Jon Pertwee. After the Sea Devils attack the island prison and rescue the Master, the Doctor must venture underwater in pursuit.

Classic British sci-fi adventure starring Jon Pertwee. While the Doctor tries to make peace with the Sea Devils in the their underwater colony, the navy launch an attack on the base! Part 5/6.