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TRENT'S LAST CASE.

Manderson's voice; he had a talent for acting; he had a chess-player's mind; he knew the ways of the establishment intimately. I grant you that the idea was brilliantly carried out; but everything favoured it. As for the essential idea, I do not place it, as regards ingenuity, in the same class with, for example, the idea of utilizing the force of recoil in a discharged firearm to actuate the mechanism of ejecting and reloading. I do, however, admit, as I did at the outset, that in respect of details the case had unusual features. It developed a high degree of complexity.'

'Did it really strike you in that way?' enquired Trent with desperate sarcasm.

'The affair became complicated,' went on Mr. Cupples unmoved, 'because after Marlowe's suspicions were awakened, a second subtle mind came in to interfere with the plans of the first. That sort of duel often happens in business and politics, but less frequently, I imagine, in the world of crime.'

'I should say never,' Trent replied; 'and the reason is, that even the cleverest criminals seldom run to strategic subtlety. When they do, they don't get caught, since clever policemen