A killer going by the name of Crimson Jack is stalking the wartime streets of London, murdering women on the exact dates of the Jack the Ripper killings of 1888. Has the Ripper somehow returned from the grave? Is the murderer a descendant of the original Jack or merely a madman? Scotland Yard turns to Sherlock Holmes, and with the faithful Watson he will tread the blacked-out streets of London, where death waits just around the corner.