The tragic death of Virginia Stewart, well known actress, brings Blair his first case. London, in spite of Blair's twenty-four years absence in service in Canada, the scene of his birth and early training, is strangely familiar. For the first time in his professional experience, Blair is for the defense. Clement Wilson, fiance of Miss Stewart has been arrested, and is awaiting trial on the charge of murder. In spite of the overwhelming evidence against Wilson, Blair finds a curious flaw in the Scotland Yard case...