For of one thing Antony was certain. Cayley knew more than he professed to know. That is to say, he knew more than he wanted other people to know he knew. Antony was one of the “other people”; if, therefore, he was for trying to find out what it was that Cayley knew, he could hardly expect Cayley’s approval of his labours. It would be The George, then, for Antony after the inquest.

What was the truth? Not necessarily discreditable to Cayley, even though he were hiding something. All that could be said against him at the moment was that he had gone the longest way round to get into the locked office⁠—and that this did not fit in with what he had told the Inspector. But it did fit in with the theory that he had been an accessory after the event, and that he wanted (while appearing to be in a hurry) to give his cousin as much time as possible in which to escape. That might not be the true solution, but it was at least a workable one. The theory which he had suggested to the Inspector was not.