"No man can do more.

Some crimes are beyond the power of the law to punish for sheer lack of proof.

This is one of them; and, so far as I can see, this unknown assassin will be punished on Judgment Day--not before." "Then you don't think that Signor Ferruci is guilty ?" said Diana.
"No.

He has had nothing to do with the matter; nor has Mrs.Vrain brought about the death in any way." "You cannot say who killed my father ?" "Not for certain, but I suspect Wrent." "Then why not find Wrent ?" asked Diana bluntly.
"He has hidden his trail too well," began Link, "and--and----" "And if you did find him," finished Denzil coolly, "he might prove himself guiltless, after the fashion of Mrs.Vrain and Ferruci." "He might, sir; there is no knowing.

But since you think I have done so little, Mr.Denzil, let me ask you who it is you suspect ?" "Dr.Jorce of Hampstead." "Pooh! pooh!" cried Link, with contempt.