Mr Pottermack's Oversight

Mr Pottermack is a law abiding, settled, homebody who has nothing to hide until the appearance of the shadowy Lewison, a gambler and blackmailer with an incredible story. It appears that Pottermack is in fact a runaway prisoner, convicted of fraud and Lewison is about to spill the beans, unless he receives a large bribe in return for his silence. But Pottermack protests his innocence, and resolves...