The Return of Martin Guerre (1982)

Synopsis
The Return of Martin Guerre is set in France during the Hundred Years' War. Imagining herself a widow, Nathalie Baye is astonished when her husband Gerard Depardieu returns after nine years. He looks like her husband and sounds like her husband, and certainly has a working knowledge of the couple's prior relationship. Still, neither Baye nor her neighbors can shake the notion that Depardieu is an imposter--especially since he's a much nicer and more responsible person than the man who marched off to war so long ago. Matters come to a head when the local magistrate sentences Depardieu to hang for his own murder. Return of Martin Guerre was the principal source for an American film, Sommersby (1993). ~ Hal Erickson, All Movie Guide