The Witch of the Future was the company psychologist. She had access to every sensor in your office, under your mattress, below your skin. She knew what you watched and read what you wrote. She couldn't see your dreams but her inferences of them were sharper than your memories.
So when the Witch of the Future told Harry in the iron-god-and-law-clad privacy of his session there was a seventy-three percent chance he would misuse company resources to try to commit a crime he would have believed her even if he hadn't been half-planning it already. But he hadn't been sure that it was something he wanted to do until the Witch of the Future told him.
Ninety-four, said the witch to the closed door when he left.
The Witch of the Past was the AI interface to the company archives. There was little it couldn't answer if you had the right questions and your title was fancy enough. Harry had designed his questions to help him plan his future crime by understanding how similar crimes had been committed in the past. Over many midnight sessions with the witch Harry learned that people very similar to him had attempted very similar crimes with the neurotic regularity of a corporate function. Not the same person but close enough. Not the same crime but close enough. Always caught before the public could be harmed. Always to the benefit of the company's reputation and internal security's ever-increasing budget.
The Witch of the Present was a voice inside Harry's head. He had made it up a few years after joining the company to help him deal with the stress. He had thought he had made it up a few years after joining the company to help him deal with the stress. It was her who had first suggested the crime.
You don't know for sure that you don't have a chance Harry heard in the witch's voice sitting alone in his big office. And if they pushed you to it and you pull it off anyway then the payoff will be even sweeter.
Harry was certain that none of the witches had ever lied to him. If he asked they probably would tell him what they had told the other men who had done what he found himself doing before having decided he had made up his mind.