Dick Powell's Zane Grey Theatre (1956)

S6E1 The Dominators (1)

The TARDIS touches down on the planet Dulkis, and the Doctor, Zoe, and Jamie are looking forward to a peaceful getaway. However, they soon discover that the Evil Dominators and their robotic minions, the Quarks, have landed on a toxic island. The villains are scheming to set off a bomb in the planet’s core, intending to transform Dulkis into a radioactive resource to power their invasion fleet.