Martinaud, an illustrious notary suspected of being the perpetrator of two horrendous crimes, voluntarily agrees to be questioned by Inspector Gallien on New Year's Eve. What initially is a routine procedure, soon becomes a harsh interrogation that seems to confirm the initial suspicions.

Cast: Lino Ventura, Michel Serrault, Romy Schneider, Guy Marchand, Pierre Maguelon, Serge Malik