Diabolically Yours (1967) Plot Summary Explained

He is kept as a virtual prisoner because Christiane and Frédéric need him alive to maintain the false identity of Georges Campo. There is no telephone, he cannot get past the high stone walls, and they constantly monitor him. Their goal is to keep him isolated until they can successfully kill him and stage a proper public death that would allow Christiane to inherit the business.

Foreshadowing: Early on, Christiane insists he must rest and take medication, while also stating there is no hope for marital relations until he is well - setting up the lie that he is her husband.

• mansion
• prisoner
• trapped
• isolation
• controlled

Pierre Lagrange is the man's true identity - he is an ex-soldier who fought coarsely in Algeria. The nightmares are fragmented memories of his real past emerging through the amnesia. Christiane and Frédéric deliberately got him drunk and crashed his car to use him as a body double for the dead Georges Campo, hoping no one would question the identity of a man with no memory.

Foreshadowing: The nightmares begin almost immediately after he wakes, suggesting the memories are trying to break through the imposed identity.

• pierrelagrange
• algeria
• soldier
• memories
• amnesia
• identity

They murdered Georges Campo in secret so they could take over his lucrative Hong Kong business. However, they needed a public death to legally marry and inherit his business, which is why they staged the car crash using Pierre Lagrange as a substitute. The entire scheme was designed to let them inherit the fortune without suspicion.

Foreshadowing: Frédéric mentions being old friends from their days in business together in Hong Kong, establishing the financial motive early.

• georgescampo
• murder
• hongkong
• business
• inheritance
• scheme

After secretly killing Georges Campo, they needed a public death to clear the way for their marriage and business takeover. They lured Pierre Lagrange (the amnesiac protagonist), got him drunk, and crashed the car to make it appear that Georges had died in an accident. When Lagrange survived the crash, they were forced to keep him alive and pretend he was Georges, attempting multiple times to kill him and stage a proper death.

Foreshadowing: The opening scene establishes the crash and three-week coma, with no witnesses questioning who died.

• car crash
• staged death
• substitute
• accident
• scheme

The police arrive to investigate the two deaths (Kim and the apparent murder of Christiane and Frédéric's scheme), but they find no corroborating evidence for his incredible story. With no witnesses, no memory of his true identity, and a convincing setup by the deceased conspirators, his claims about being Pierre Lagrange and not Georges Campo seem like the ravings of a confused amnesiac. The lack of any proof leaves him trapped in the false identity.

Foreshadowing: The entire movie builds to this moment where the truth is finally known but too late to save him.

• police
• denied
• unbelieved
• evidence
• truth

After the protagonist beats Christiane and reveals he knows the truth, Kim attacks him with a knife out of jealousy and loyalty to Christiane. She then shoots Kim to prevent him from killing the man she now needs alive - she needs the protagonist to continue playing Georges Campo so she can maintain the business scheme. It's a calculated decision to preserve their plans rather than a protective act.

Foreshadowing: Kim's suspicious closeness to Christiane and his jealousy were established early in the film.

• kim
• shooting
• jealousy
• loyalty
• killed

After the confession reveals the entire plot, Christiane shifts strategies entirely. With Frédéric dead and Kim killed, she proposes a new arrangement: if he will continue pretending to be Georges Campo, she will be both his wife and business partner, letting them run the Hong Kong operation together. It's a cold, calculating move to salvage the scheme despite losing her accomplices.

Foreshadowing: Her earlier statement about no marital relations until he is well was always part of the manipulation.

• christiane
• offer
• partnership
• business
• marriage
• scheme

The trap door, dog attack, and falling chandelier are all attempts by Christiane and Frédéric to kill the man they believe is an impostor and stage a proper public death for Georges Campo. Each attempt fails either through luck or his growing suspicion and alertness. These failures frustrate their timeline and force them to keep him alive while devising new methods, which ultimately leads to their downfall when he discovers the truth.

Foreshadowing: The pattern of life-threatening incidents escalates as he becomes more suspicious and questioning.

• attempts
• assassination
• failed
• killing
• trapdoor
• dog
• chandelier

Kim is the half-Chinese butler who serves Christiane and Frédéric in the mansion. He displays an oddly close relationship with Christiane and obvious jealousy toward the man claiming to be her husband. His role is to act as their servant and enforcer, though his emotional attachment to Christiane ultimately drives him to attack the protagonist when he sees her being hurt, leading to his death.

Foreshadowing: Kim's offhand greeting and suspicious closeness to Christiane are noted early as warning signs.

• kim
• butler
• relationship
• jealousy
• halfchinese

Christiane is playing a long game throughout the entire scheme. When the protagonist forces himself on her while Frédéric is away, she does not resist because she understands she must maintain control over him. Her later confession reveals her to be a cold, calculating manipulator who will do whatever necessary to preserve the business arrangement. Her lack of resistance is part of her strategic approach to managing him.

Foreshadowing: Her earlier comment about waiting for marital relations until he is well was manipulation, not genuine concern.

• christiane
• assault
• manipulation
• resistance
• strategy

The mansion has no telephone because Christiane and Frédéric are deliberately isolating the amnesiac man to prevent him from contacting anyone who might recognize that he is not Georges Campo. This isolation is essential to their scheme - if he could call business associates or friends of the real Georges, the deception would be exposed immediately. The lack of communication tools keeps him completely dependent on their version of reality.

Foreshadowing: The absence of any way to contact the outside world is mentioned alongside his inability to leave the grounds.

• telephone
• isolation
• no contact
• communication
• control