Letters to an Unknown Lover During World War II, two allied soldiers escape from a Nazi POW camp to Lyons, where they accept the hospitality of mademoiselle Helene. Details Casts Posters Title Letters to an Unknown Lover Release Date 1986-05-28 Runtime 01 Hours 41 Minutes Genres Drama Romance Mystery Production Companies France 2 Cinéma, Portman Productions, SFP, Channel 4 Television Production Countries France, United Kingdom Yves Beneyton... Gervais... Cherie Lunghi... Helene... Andréa Ferréol... Julia... Ralph Bates... Bernard... Mathilda May... Agnès... Original Size (1000x1500)