What Have You Done to Solange?

What Have You Done to Solange?
Italian theatrical release poster
Italian	Cosa avete fatto a Solange?
Directed by	Massimo Dallamano
Screenplay by	Bruno Di Geronimo Massimo Dallamano[1]
Produced by	Fulvio Lucisano Leo Pescarolo Horst Wendlandt[1]
Starring	Fabio Testi Karin Baal Joachim Fuchsberger Cristina Galbó Camille Keaton Günther Stoll Claudia Butenuth
Cinematography	Aristide Massaccesi[1]
Edited by	Clarissa Ambach Antonio Siciliano[1]
Music by	Ennio Morricone[1]
Production companies	Italian International Films S.r.l. Clodio Cinematografica Rialto Film
Distributed by	Italian International Film (Italy) Constantin Film (West Germany)
Release date	9 March 1972 (1972-03-09)
Running time	103 minutes[1]
Countries	Italy West Germany
Box office	846 million Italian lire (Italy)

What Have You Done to Solange? (Italian: Cosa avete fatto a Solange?) is a 1972 giallo film directed by Massimo Dallamano and starring Fabio Testi, Karin Baal, Joachim Fuchsberger, Cristina Galbó, and Camille Keaton. The plot follows a series of violent murders occurring at a Catholic girls' school in London, where a young student has gone missing.

The film is a co-production between Italian production companies Italian International Films S.r.l., Clodio Cinematografica and West German studio Rialto Film. It was released in Germany as Das Geheimnis der grünen Stecknadel ("The Clue of the New Pin"), where it was promoted an Edgar Wallace krimi film.^[1]