What Have You Done to Solange? – Cosa avete fatto a Solange?

What Have You Done to Solange? is a 1972 giallo film directed by Massimo Dallamano. The film is loosely based on the Edgar Wallace mystery novel The Clue of the New Pin. It was shot on location in London, England over the course of six weeks in the autumn of 1971. The film’s Italian title is Cosa avete fatto a Solange? In recent years, the film has gained a reputation as one of the best giallo films of the early 1970s among fans of the genre.