"But it's impossible, and, after all, can do little good." "It's not impossible, and can at least punish the assassin. No one but myself cares for my poor mother's memory, and I must avenge her death. Come, dear"--she placed her arms round his neck--"you will be my knight-errant?" "Yes," said Ralph, promptly, and kissed her. "But where shall I begin?" "Begin?" replied Audrey, seriously. "Begin at Madame Coralie's--at the Pink Shop." "At the Pink Shop?" repeated her lover. "Good! I shall start to-morrow." CHAPTER VII THE LADY DETECTIVE Influenced by Audrey's love, and touched by her devotion to her mother's memory, Shawe had committed himself beyond withdrawal to the _rôle_ of knight-errant. Like those of old he was going out, if not to redress a cruel wrong, at least to revenge it. He quite understood why the girl wished to punish the assassin of her mother; but he could not see how the fulfilment of the task she had set him would bring about their marriage. Sir Joseph cared so little for his late wife that he was quite willing to bury the bitter fact of her existence in oblivion. To reawaken recollections of the objectionable Lady Branwin by bringing her murderer to justice, and thus revive the whole terrible episode for the benefit of the public, would not be pleasing to the millionaire. Moreover, if Shawe did accomplish his aim, Branwin would only pay to him the already promised reward. He would be ready enough to give the money, since he had ample means at his disposal, but he certainly would remain firm on the question of the marriage. Of course, Ralph knew well enough that Audrey would not fail him and would remain true. But since she refused to marry him because she fancied she would hinder his career, and since Sir Joseph certainly would disinherit her if she so persisted, and thus she would not bring him any money to aid that career, it seemed that there was but a faint hope she would become Mrs. Shawe. Still, he had promised, and it only remained for him to keep his promise, with the hope that events would so turn out that the desire of his heart might be fulfilled. With this idea in his mind Shawe returned to his chambers in the Temple and set about making a start. But it was like looking for a needle in a haystack.