The Strange Vice of Mrs. Wardh (Italian: Lo strano vizio della Signora Wardh) is a 1971 giallo mystery film directed by Sergio Martino, and starring Edwige Fenech, George Hilton, Ivan Rassimov, and Alberto de Mendoza.

On her first night back in Vienna, Julie is delivered a flower bouquet with a sinister note from Jean.

At a high society party, Julie's friend Carol introduces her Australian cousin George.

Carol goes to meet the unknown individual at the Schönbrunn Palace Park, where she is murdered by someone wielding a straight razor.

Julie is later attacked in the parking garage of her apartment building by a figure with a straight razor, but she escapes.

Julie is terrified of remaining in Vienna and secretly leaves her husband to travel to Spain with George.

Julie is ecstatic upon reading that the dead killer was a stranger to her, but someone continues to stalk her in Spain and sends her a note signed "Jean," causing her to have a nervous breakdown.

George meets with Neil, and their car ride conversation reveals that they conspired to murder Carol and Julie.

Neil sees Julie standing on the side of the road, and he and George are suddenly pursued by police vehicles.