While attending a lavish masked ball in Venice, retired Scotland Yard detective Jasper has a shock when, at the midnight démasqué, he spots a woman whose accidental death he investigated in England three years ago. Even more stunned than Jasper is the woman's husband, Lord Bantham, who has since remarried, not to mention his new wife who sees her acquired position and wealth slip away. Then there are her old friends who all seem to have known more about the 'accident' than they ever let on. When the resurrected lady is found dead the next morning on one of Venice's many bridges, the question is: who wanted Lady Bantham to die, again?