After a heart attack, Matthias Taifer wakes up in a hospital room to the sound of a cello. A mysterious girl stands by his bed. She is Louise Colange, a volunteer medical student playing the cello for patients. Learning that Matthias is a police officer, she asks for his help in investigating her mother’s death. This initiates an intriguing and unusual investigation into a girl who sold the invaluable to buy the life she dreamed of, a man with a heart worn out by love, a dancer who fell before the end of the performance, and a child abandoned multiple times.

Guillaume Musso has been the most-read French novelist in France for over ten years. Born in Antibes in 1974, he began writing during his study years and hasn't stopped since. In 2004, his book "Et après" introduced him to the public, followed by other books such as "The Girl and the Night" (2019), "The Secret Life of Writers" (2020), "Life is a Novel" (2021), and "Unknown of the Seine" (2022).

His works have been translated into forty-four languages and some adapted into films, achieving significant success in France and worldwide.

"An extraordinary investigation full of twists and turns. In this novel, we find all of Guillaume Musso's talent, once again taking our breath away to the very last page." — Sandrine Bajos and Catherine Balle, Le Parisien