Bilbao is a Basque city in Spain, the title of a song by Lotte Lenya, and (in this movie) the name of the prostitute being stalked by an ominously silent, obsessed and deeply disturbed man. He collects information about any of the three Bilbaos in a scrapbook, and for a long time only follows the girl around before causing her to suffer a grisly fate at his hands.~ Clarke Fountain, All Movie Guide