Plot: Esteemed criminal lawyer Sir Wilfrid Robarts has just returned to practice after suffering a heart attack and is supposed to be on a diet of bland civil suits. But the case of Leonard Vole, a charmer accused of murdering a rich middle-aged widow, proves irresistible — particlularly when Sir Wilfrid meets the accused's wife, the remarkable Christine Vole. Christine will appear as a witness: not the defense, but for the prosecution.