A young girl's lifeless body lies beneath the Owl's Head Mountain walking bridge, her violet eyes closed forever. Eight-year-old Anna Saulstice, an autistic child who found solace in nature's embrace, has met an untimely end, her death sending shockwaves through the close-knit community. Inspector Gabriel Duforêt and Lieutenant Maxine Leblanc suspect foul play and embark on a relentless pursuit of justice. Anna, an optimistic and adventurous spirit, cherished the whimsical treehouses built for the local children by two enigmatic men from overseas. She possessed an uncanny knowledge of medicinal plants, even concocting her own herbal remedies. The investigation leads Duforêt and Leblanc on a breathtaking journey through Quebec's picturesque landscapes. They encounter Anna's eccentric mother, her neglectful father, the mysterious triplet women residing across the lake, and a cast of characters who may hold the key to unravelling the truth. But as the detectives close in on a suspect, a startling revelation emerges: Anna's death wasn't an accident. And one of the ravens who watched over her is missing. To solve this perplexing puzzle, Duforêt and Leblanc must not only uncover Anna's true cause of death but also locate the missing raven, a silent witness to the tragedy. The clock is ticking as they race to bring Anna's killer to justice and ensure the missing raven's safe return.