Seven Blood-Stained Orchids

The killer is driving around Italy, hunting for a specific victim. He breaks into her home and murders her, catching a glimpse of her daughter, Ines, in a photograph before leaving the scene. The police start to investigate these early killings, which set the tone for the series of murders to come.

Giulia Torresi receives a mysterious call while preparing for her wedding. Later, another call is received by partygoer Kathy, who is then followed home and killed. These events introduce the element of stalking and intimidation involving the killer.

Giulia is attacked on a train and presumed dead, prompting a staged funeral to catch the killer. However, she survives but suffers from amnesia regarding her attacker, complicating the investigation.

Giulia recognizes a former hotel colleague's lover as a suspect, leading the police to suspect Mario. She also recalls a half moon plaque left at the crime scenes, which becomes crucial for the investigation.

Giulia and Mario find that the hotel registry page with the suspect's name has been ripped out. They recover the page and compile a list of women who stayed at the hotel, including victims and Giulia herself, which fuels their suspicion.

Mario and Giulia visit Elena Marchi, a former guest, only to find her dead. Mario chases a suspect into a dark corridor, gets slashed, and catches a brief glimpse of the killer escaping, deepening the mystery.

Mario learns from a sketch artist and townspeople that the American suspect is Frank Saunders, who had a connection to a woman he was obsessed with. Attempts to find Frank reveal that he died in a car accident two years earlier.

Anna Sartori, a woman on the victim list, arrives in Italy and is immediately scrutinized by police. Her husband explains her traumatic past living in Italy, and her arrival signals she might be targeted by the killer.

Anna's twin sister Maria is sent to buy a newspaper but is mistaken for Anna and killed by the killer. This highlights the killer's relentless pursuit and the danger faced by remaining victims.

Fainting from shock, Giulia decides to go public to catch the murderer. This risky move is intended to flush out the killer, but it leaves her vulnerable and unprepared for the final confrontation.

Mario confronts Barrett, suspecting him to be involved, but finds him dead from an apparent suicide. The case becomes more complex as the killer's identity remains elusive and the suspicion shifts.

Anna admits to having left Frank Saunders to die after their affair, revealing her involvement in the earlier murders. This confession provides a critical lead on the chain of events and the identity of the killer.

Giulia encounters the priest, who is uncovered as the true killer behind the murders. He explains his motive rooted in revenge for his brother’s death and admits to staging Barrett's death as a suicide.

The priest attempts to strangle Giulia but is thwarted when Mario arrives. Mario rescues her by drowning the priest in the pool, ending the series of murders and bringing closure to the investigation.