What Have You Done to Solange?

• Director Massimo Dallamano started out as a cinematographer, shooting Sergio Leone's A Fistful of Dollars (1964, credited as "Jack Dalmas") and For a Few Dollars More (1965) before moving to the director's chair.
• Ennio Morricone scored the film, with vocalist Edda Dell'Orso's wordless vocals over the main theme; it's regarded as one of his standout giallo soundtracks.
• The film was rejected outright for UK cinema release by the BBFC and stayed effectively banned in Britain for close to two decades, only reaching UK video in 1996 on the Redemption label with over two minutes cut.
• Cristina Galbó, who plays student Elizabeth, was born in January 1950 and was around 21 during filming, not a teenager as her schoolgirl role might suggest.
• Dallamano died in a car accident in November 1976, months after his last completed film as director, the poliziottesco thriller Colt 38 Special Squad.

The killer acts not as an individual psychopath but as the physical manifestation of the school's repressed collective trauma, suggesting the murders are a twisted form of penance demanded by the rigid Catholic environment.

Henry's entire investigation is a projection of his own guilt over his affair and neglect of his wife, meaning the clues he 'discovers' are subconscious attempts to justify his moral failings rather than objective evidence.

The final revelation implies the institution itself is the true monster, with the murderer merely serving as an executioner for a system that values reputation over the lives of its female students.

A married Italian schoolteacher's secret affair with his teenage student blows up into a nightmare when she witnesses a murder from a rowboat on the Thames — and the body count starts climbing among her Catholic-school classmates. Suspected by police and desperate to protect the girl he's sleeping with, Enrico Rosseni starts digging on his own and keeps hitting the same name: Solange, a former student nobody at the school will talk about. Dallamano trades giallo's usual supernatural flourishes for foggy, procedural dread, turning London into a city where every confession feels one step from a death sentence. The killer isn't some faceless phantom — it's someone close enough to the school to know exactly which sins to avenge, and the trail leads straight back to what really happened to Solange.