When Parisian private investigator Aim├йe Leduc picks up the phone one hot July afternoon, the call turns her life upside-down. The voice on the other end, with its heavy German accent, belongs to a woman named Jutta Hald. Jutta claims to have shared a jail cell with Aim├йeтАЩs long-lost mother, a suspected terrorist on InterpolтАЩs most wanted list. If Aim├йe wants to learn the truth about her mother, she is to meet Jutta at a rendezvous point in an ancient tower in the Sentier. But when Aim├йe arrives, Jutta is dead, shot in the head at close range.
Aim├йe realizes she has stumbled into something bigger than Jutta let on, and that her own life is in danger. She has a lot of unsolved mysteries in front of her: Jutta HaldтАЩs murder, resurfaced materials from Sydney LeducтАЩs terrorist activities in the 1970s, police suppression of important information. The question is, can someone else ends up dead?