Between the flashes of a camera and the shadows of a studio, Luna and Sara built an artistic complicity that enchanted the world. Seen as two halves of a single vision, the photographers share a passion for beauty, detail, and the ethics of looking. But when success arrives, the light of fame chooses only one face, and it is Sara who becomes the center of attention.While Sara shines under the spotlights, Luna begins to fade, not only from the public narrative but also from her own life. The partnership transforms into a stage for silent disputes, where credits are stolen and promises are lost. What seemed like a shared creative journey becomes a slow act of erosion, fueled by compliments that wound and a care that serves as a mask for control.It is in this setting of betrayal and disappearance that Iris appears, a doctor whose eyes see beyond appearances and who recognizes in Luna's deterioration a mystery that is not only clinical but also ethical. Her silent presence and attentive listening become the only antidote to a subtle, but deadly, poison that corrodes Luna's health and confidence.The Shadow of the Flash is a novel that delves into the tensions of authorship and fame in the art world, exploring how betrayal can poison not only relationships but the body itself. It is a story about what happens when art becomes a mask for privilege and what is reborn when care chooses to become language, inaugurating a new form of existence, without a stage or permission.The narrative invites the reader to reflect on appearances, silence, and the power of finding one's own voice, even when the world seems determined to erase it.