The lawyer is visiting a prison to meet with a violent criminal who has been condemned to death. During the visit, things turn bad, there is a riot where prisoners escape and the criminal escapes taking a lawyer hostage.
Jean-Philippe Duroc, Gaulard's lawyer
Martial Gaulard, condemned to death
Marcel Duroc, father of Jean-Philippe
Jacques Panivaux, owner of the Rolls-Royce
Gisèle Panivaux