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.

Inspector Antoine Gallien
JΓ©rΓ΄me Martinaud
Chantal Martinaud
Inspector Marcel Belmont
Inspector Adami
Mechanic
Divisional Commissioner
Policeman in Raincoat
Son Berthier
Young policeman
Policeman
Camille's mother