Clyde wins a prize for his painting: a trip to see the Mona Lisa on its first exhibition in a British gallery. However, the Mona Lisa comes to life, steps out of the frame and replaces herself the assistant curator.
Worse she is able to replicate this power on other paintings: arming herself with a Sontaran blaster from Clydes painting and framing Sarah Jane in a nother painting.
Thus armed she attempts to force the gallery director to help her release her beast of a brother.
Neill Gorton’s MillenniumFX was responsible for prosthetics and special makeup design.