(:redirect quiet=1 SplitPersonalities:)
From his website:
My latest story Split Personalities was a desire to write a Donovan and Powell story that had them separated for some reason, but still having to solve a problem related to a robot.
I quite like the symmetry of this story regarding the beginning and end. By the way, if British English is not your native language 'Lolly' is a word for a frozen drink on a stick - you'll see the significance if you read the story.