Four Flies on Grey Velvet (1971) Timeline Explained – Every Event in Order

Roberto was targeted because he bore a striking resemblance to Nina's abusive stepfather. After her stepfather's death cured her of her psychosis, Nina sought revenge on him as a proxy, framing Roberto for a murder he didn't commit and orchestrating the entire campaign of terror against him.

Foreshadowing: The stalker's obsession with Roberto and the elaborate setup suggest a personal vendetta rather than random targeting.

• roberto stalker
• nina stepfather
• revenge
• proxy killing

Nina, Roberto's wife, was the mastermind behind all the murders. She orchestrated the entire plot with Carlo Marosi, who faked his death using a prop knife. Nina killed Amelia, Dalia, Arrosio the investigator, and attempted to kill Roberto as part of her revenge campaign against her stepfather's lookalike.

Foreshadowing: Nina's fly pendant and the recurring fly imagery throughout the film hint at her involvement, culminating in the optography reveal showing four flies.

• nina killer
• reveal
• twist
• killer identity

Carlo Marosi conspired with Nina to fake his own death using a prop knife during the confrontation in the opera house. The blade was designed to retract, making it appear that Roberto had stabbed him fatally when in reality Marosi was never seriously injured. Nina photographed the scene to create evidence against Roberto.

Foreshadowing: The mysterious photographer on the balcony was actually Nina herself, capturing staged evidence for her frame-up.

• carlo marosi
• fake death
• prop knife
• conspiracy

Nina killed Dalia because Dalia was beginning to suspect her identity as the killer. As Nina's cousin, Dalia had enough familiarity to notice behavioral patterns that might expose the conspiracy, making her a threat to Nina's plan.

Foreshadowing: Dalia's growing suspicion and her statement that she was beginning to know who the killer was directly preceded her murder.

• nina kills dalia
• cousin murder
• exposed identity

The optography revealing four dark smudges was meant to reconstruct the last image Dalia saw before dying. The four flies symbolized Nina, who wore a glass-encased fly pendant and used flies as her personal motif throughout the killings. The police technician described the result as looking like four flies on grey velvet, which directly pointed to Nina.

Foreshadowing: The recurring nightmare imagery of flies and Roberto's observation of Nina's swinging pendant directly connect to this reveal.

• optography
• four flies
• clue
• pendant evidence

Nina's stepfather was an abusive man who forced her to dress as a boy and eventually had her committed to Villa Rapidi asylum. When her stepfather died naturally, it cured her of her psychotic condition but deprived her of the chance for revenge. She then selected Roberto, who looked identical to her stepfather, as a proxy target for her bottled-up rage.

Foreshadowing: The psychological connection between the stalker's obsession with Roberto and the asylum backstory establishes the proxy revenge motivation.

• nina abuse
• stepfather
• asylum
• villa rapidi
• psychosis

Arrosio was murdered by Nina in a subway bathroom stall. After trailing the unnamed patient from Villa Rapidi (which was actually Nina herself), he was ambushed and killed with a poison-filled syringe. His death eliminated one of Roberto's only links to discovering the truth.

Foreshadowing: Arrosio's investigation was getting close to connecting the asylum patient to the case, which is why Nina eliminated him.

• arrosio murdered
• private investigator
• subway
• syringe

Amelia was killed because she overheard Roberto's confession about killing Marosi and tried to blackmail Nina and Roberto. She arranged a park meeting with the tormentor (Nina) to leverage her knowledge, but Nina killed her to silence her and prevent the blackmail from derailing the plan.

Foreshadowing: Amelia's greed for leverage directly led her to arrange a meeting with the very person she intended to blackmail.

• amelia killed
• blackmail
• park meeting
• murdered

Roberto's recurring nightmare showed him being publicly beheaded in a Saudi square, which he believed was a premonition. In the film's climax, Nina was the one who was decapitated when her car crashed into a truck and was ripped apart by the vehicle's rear bumper. The nightmare reflected Nina's fate, not Roberto's, serving as ironic foreshadowing.

Foreshadowing: The nightmare imagery of flies and beheading directly paralleled the final scene where Nina meets her demise.

• nightmare
• beheading
• premonition
• foreshadowing
• fate

Nina managed to orchestrate the entire conspiracy by maintaining a facade of being a supportive wife while secretly being the mastermind. She coordinated with Carlo Marosi to fake his death, killed victims in secret, and used the stalking scenario to frame Roberto. Her position in the household allowed her to control information and manipulate events without raising suspicion.

Foreshadowing: The warning from the masked attacker that "their work isn't finished" and the earlier ambush at home were orchestrated by Nina herself.

• conspiracy
• nina manipulation
• frame job
• orchestration