The village featured is Shere in Surrey.
It has hardly changed at all, including the square near the pub and the shop where he acquires the radio.
Willard Parker (Jeff Nolan) and Virginia Field (Peggy Hatton) were married in real life from 1951 until her death in 1992.
Screenwriter Harry Spalding once said that someone said the title "as a joke" and "somehow it kind of stuck" and he always hated the title.
It was one of several 1960s British horror films to be scored by the avant-garde Elisabeth Lutyens, whose father, Edwin Lutyens, designed Manor House Lodge in Shere, a small property which features prominently at several points in the film.
Final film of actress Virginia Field.