Missy - TARDIS Dematerialization Matrix

She studied her handiwork with satisfaction. Her repair of the dematerialisation circuit was fiddly, but ultimately successful. It stood on the altar, a delicate tetrahedron of complex equipment small enough to fit in her palm. Essential for operating the TARDIS. Much good that would do if the power wasn’t restored.

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The Missy Chronicles: The Liar, the Glitch and the War Zone