‘But,’ said Campion, unable to restrain the question which had worried him from the beginning, ‘where is the satisfaction in a crime like this? He left these traps, we know, but if he were dead, what fun could he get out of their success?’
Mrs Faraday pursed up her lips. ‘It is an illustration,’ she said, ‘of a certain type of mentality which you, as a healthy-minded being, may find it difficult to grasp. However, you must take it from me; Andrew had one extraordinary defect. He was so mentally short-sighted that he was not capable of foreseeing the most ordinary consequences of his actions other than the immediate effect at which he was aiming. I think his insanity lay largely in the possession of this peculiar blind spot.’
‘But he planned these murders so cleverly,’ protested Mr Campio
