When Lise's car bumps Antoine's bike, they recognize each other from a brief fling 20 years before while at the Sorbonne. He's now a professor of Greek; she's loathe to tell him she's a police inspector. A call interrupts their first dinner date: a Deputy of the National Assembly has been murdered. She has a suspect, another Deputy, and must track him while deflecting Antoine's eye from her vocation. All roads in the inquiry lead to Christine Vallier, the dead Deputy's mistress, a beguiling 22-year-old whose mother ran the Assembly's snack bar. When more deputies die and Antoine learns Lise's identity, she must act quickly solve the crime and save her future.
Annie Girardot
as Lise Tanquerelle
Philippe Noiret
as Antoine Lemercier
Catherine Alric
as Christine Vallier
Hubert Deschamps
as Charmille
Paulette Dubost
as Mother
Roger Dumas
as Marcel Guérin, l'inspecteur
Raymond Gérôme
as Head of Criminal Division
Guy Marchand
as Beretti
Simone Renant
as Suzanne
Georges Wilson
as Alexandre Mignonac
Monique Tarbès
as Bathroom attendant
Henri Czarniak
as L'inspecteur Cascard
