• Fabio Pittorru
• Massimo Felisatti
• Sergio Donati

• Anna Moffo
• Ida Galli
• Gastone Moschin

In this comical Italian murder mystery, family members congregate at a British estate for the reading of a will. As in many mysteries before it, the attendees are murdered off one by one until only a soprano for the Metropolitan opera remains. In the end, Scotland Yard convinces her to confess because they know that she hid the second will she discovered.