 Romance in the prime of life. 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.