Doctor Who - Past Doctor Adventures - 69 - The Indestructible Man (2nd Doctor)

The Myloki, mysterious aliens from beyond Time and Space.
Their Target: Earth.

The human defenders of PRISM are enmeshed in a doomed interstellar
war against an unknowable invader armed with the power to possess,
duplicate and destroy from within.

Only one man stands in their way. A man destiny has made
indestructible. Against all the odds the legendary Indestructible Man
saves the Earth but victory comes at the highest price. The world
economy collapses, governments crumble and PRISM itself is torn apart by
a best-selling expose.

AD2096; PRISM has gone underground, becoming the clandestine SILOET, headed by new commander Hal Bishop.

Bishop receives an urgent summon to his headquarters. An infiltrator
has been unmasked and captured in the heart of SILOET itself. Fatally
wounded, the infiltrator makes a miraculous recovery. It appears he is
indestructible.

The implications are terrifying.

The Myloki may just have returned. And who is left to stop them?