Plot: Little Diane Simson knows she's not allowed pets in her high-rise home and so creates an imaginary cat called Tiggy - but this only triggers the power of Hecate. As Sapphire and Steel arrive as timely as ever, they are confronted by Diane now transformed into a wild cat creature. They are powerless to stop Hecate and her familiar Grimalkin as they run off into the night, leaving behind the cataleptic figure of the real Diane. Hecate, testing her powers, reduces Battersea power station to rubble. Next she focuses her magic upon the Big Ben clock tower but Sapphire and Steel have the real Diane reject Grimalkin at that instant, thus weakening Hecate's powers. The cat disappears and Hecate is banished.
Comments: Nice to see that the characters are as offhand as their TV counterparts - while Sapphire takes time back a few seconds to rebuild the Big Ben clock tower she dismisses Battersea power station as something that can be rebuilt by human hands! A shorter tale this one, with a rather rushed, confused and convenient ending.
