Chloé Saint-Laurent is a profiler and works with a police team to solve murders in Paris. She's very sweet, she wears very colored clothes and a huge yellow bag. She looks like a little girl who need a doll, but she's very smart and a very good profiler. Step by step, she fit in the team and her colleagues, very reserved at first, became her best friends.

Ana is twelve years old. Her body is in full bloom, and her first adolescent desires are as exhilarating as they are unsettling. But the discovery of a mysterious letter will sketch the outline of a family secret kept hidden which will increase Ana's anguish.