Toronto's elite are thrown into panic when a member of the upper crust is badly murdered; a killer dubbed the Widow is on the loose; Detective Kenneth Rijkers is assigned to the assignment to help the victim's wife Regina Simcoe find closure.

The Widow strikes again, and intrepid newspaper editor Enid Jenkins is determined to capitalize on the murders.

The Widow sends a nasty treat to Basil and friends, which sends Kashtinsky over the edge; the Botticelli sisters plans for Verdi to have their portraits taken; Georges Rondeau, the prime suspect in the murders, preys on Regina.

The Widow's latest victim is found on Valentine's Day, dragged to death behind a horse and made up to look like Cupid; a torn piece of the Widow's weeds sends Kenneth and Regina off on a hunt; Salomé entertains bidders for Verdi.

The pressure gets to Israel, who admits to her and seven others involvement in Margaret's death. Kenneth secures the suspects, later freeing Israel to operate on a friend of Regina, inadvertently putting Israel in the Widow's clutches.

With Kenneth's list of suspects either jailed or buried, he sets his sights on the sly magician Georges, who is slowly losing his grip on reality.

With the Widow's final victim nearly in her clutches, Kenneth's time is running out; however, upon revealing the killer's identity he grapples with how to bring justice to the victims.