A brass capsule bursts from a Paris street festival where a gunshot disappears inside applause. Inside is thirty phone videos and a murder timed to music. Commandant Luc Moreau has one night to identify the shooter and understand how four hundred witnesses all missed the same sound.
With pianist Nina Valette, sound engineer Émile Roche, instrument repairer Sami Haddad, and journalist Maya Benhamou pulling at different strands of the same buried scandal, Moreau descends into the rhythmic memory of rue Oberkampf. The closer tomorrow comes, the clearer it becomes that the music is not background to the crime-it is the mechanism that concealed it.