One Night... A Train

One Night... A Train () is a 1968 Belgian-French drama film directed by André Delvaux, starring Yves Montand and Anouk Aimée. It tells the story of Mathias, a professor of linguistics at a university where the students have lively discussions about Flemish nationalism and morality. During a train ride, the French-speaking woman who Mathias lives with disappears and he goes looking for her in an unknown city. The film is based on the novel "De trein der traagheid" by Johan Daisne.
Reception.
Aurélien Ferenczi of "Télérama" wrote in 2009: "The cleverness of the film is how it finds unusual visual equivalents to classic themes of 60s auteur cinema—-at the heart, we are very close to Antonioni. Yves Montand and Anouk Aimée are terrific, and "One Night... A Train" is perhaps, quite simply, its director's best film."
Box office.
According to Fox records the film required $1,650,000 in rentals to break even and by 11 December 1970 had made $525,000 so made a loss to the studio.