‘We will replicate the chemical actions if possible, to create a synthetic compound. The purpose is to gain control of the host’s motor functions. The larvae do not sit and drive the spider, of course, so in addition they are doing something to its brain, which changes its behaviour.’

‘Understood. You believe we may be able to influence hosts to move in ways we specify?’

‘Affirmative.’

‘Analysis is proceeding here. Objectives understood.’

This was fascinating information. The precise way wasp larvae control spiders has not been investigated in detail yet. And there are many parasites that control host behaviours, including some found in cats that can enter humans. Some scientists believe they affect human behaviour. If we can identify the chemical messengers and synthesise versions of them, we will have a means to assess the truth of this idea.

It strikes at the root of the fundamental human belief in free will. Of course, we know that much of what humans do is driven by various chemicals in their brains. But these are all internally produced, and released in response to stimuli. Even when they ingest drugs, as they do on a daily basis, the effects are to amplify or suppress existing behaviour. But to change animal behaviour in a fundamental way, using an externally produced chemical, and to be able to control and direct the animal – this is an exciting prospect.

Dr Morton has expressed an interest in this research.

Tomorrow, I am accompanying Mrs Woodruff to a press conference, at which we will announce the existence of the nanobots, and then Mrs Woodruff will demonstrate their benefits.

We will not be talking about the research I’ve just mentioned.

Margaret

I step out of the front doors of the home for the first time since – when? I have no idea.

‘A car! Look, Winifred. And what an impressive one. Like a prime minister’s. Or the king’s. Aren’t we important? Today, anyway.’

A smartly dressed young man stands holding the car door open for me.

‘And this is the driver, politely opening the door for me. When a man holds the car door open for his wife, it’s either a new car or a new wife. Who said that?’

‘The Duke of Edinburgh. Do you remember him?’ says Winifred, after the faintest pause.

‘Of course. He was always coming out with remarks like that. And worse. I shouldn’t think he ever had to hold open a car door, even for his wife. They had lackeys for that.’

Winifred nods, but says nothing.