On Trial (French: L'Affaire Maurizius; Italian: Il caso Mauritius) is a 1954 Franco-Italian crime drama film directed by Julien Duvivier and starring Daniel Gélin, Madeleine Robinson and Anton Walbrook.

Etzel, the son of the great prosecutor Andergast, wants to examine the file for the Maurizius case, eighteen years prior, in which the accused was condemned on the basis of suppositions.

This case allowed his father's career to progress rapidly, but Etzel has some doubts.

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