It is based on the opera of the same name and was entered into the 1952 Cannes Film Festival.
[2] Madame Flora is a fraudulent medium, mother of Toby, who is mute and crippled.
This condition of Toby's is important for plucking clients... During a session, Flora feels a hand squeezing her throat.
Toby returns, to meet with Monica, his girlfriend and Flora's assistant.
Flora thinks thieves have broken into the house and kills her son.