UNIT’s been inundated with prank calls. Bored, the Doctor agrees to help Liz investigate. Quickly immersed in the world of phone line hackers, it is revealed that they’re being killed, one-by-one. With the death toll rising, the Doctor will have to use all his cunning and wits to defeat a foe he can’t even talk to.
He’ll also have to use a blue box. Just not the one you’re expecting.” DRIVE
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