Hell-bent on revenge for the death of her husband, Elizabeth takes the initiative and sets a daring trap for Vladimir, the Russian spy she suspects of the deed. Meanwhile, Peter Smythe, a handsome and dedicated correspondent, is investigating the disappearances of street people in the docklands of London.

The discovery of a horribly mutilated body of one of the victims reminds Elizabeth of the horrendous acts perpetrated by the Whitechapel murderer known as the Collector. Elizabeth slew that monster, itself a creature of Vladimir, and she fears this is a new apprentice.

Sparks fly when Peter and Elizabeth come together, and they set off on a roller-coaster adventure in a fogbound steam-driven world. When the hunted becomes the hunter, Elizabeth is the bait!