An aristocratic English family gather for the reading of their father's will. The family are dismayed to find that everything has been left to Barbara, the deceased's favourite daughter. The butler is soon found stabbed to death and Sergeant Thorpe, the local bobby, telephones Scotland Yard for assistance. Inspector Grey arrives and he and Barbara narrowly escape being shot. Cousin Ted and his wife Pauline are both killed. Sergeant Thorpe recalls some photos which Ted asked to have developed...
Anna Moffo
as Barbara Worth
Ida Galli
as Isabelle Carter
Gastone Moschin
as Sgt. Aloisius Thorpe
Peter Baldwin
as Anthony Carter
Lance Percival
as Supt. Grey
Giacomo Rossi Stuart
as Ted Collins
Christopher Chittell
as Georgie Kemple
Marisa Fabbri
as Aunt Gladys Kemple
Quinto Parmeggiani
as Lawrence Carter
Beryl Cunningham
as Pauline Collins
Orchidea De Santis
as Evelyn, the maid
Claudio Undari
as Arthur, the valet
