Crescendo (film)

Crescendo is a 1970 British psychological thriller film directed by Alan Gibson and starring Stefanie Powers, James Olson and Margaretta Scott. It was made by Hammer Film Productions.

Alfred Shaughnessy wrote the script in the mid 60s. In 1966, Michael Reeves approached Hammer Films with the script. James Carreras tried for two years to make it with Joan Crawford but could not get financing. In 1969, the project was reactivated, with Jimmy Sangster hired to rewrite the script and Alan Gibson to direct.The film was released in the United States theatrically in the fall of 1972. In American theaters, it was paired with the Hammer vampire film Dracula A.D. 1972 starring Christopher Lee and Peter Cushing. ........

Source: Wikipedia