Une étude en émeraude #[nn]

Une Étude en Émeraude is a collected edition of the 2022 French series from Black River, blending Sherlock Holmes-style detective fiction with the cosmic horror of H.P. Lovecraft's Cthulhu Mythos. This volume gathers the complete story arc, following a Victorian-era investigation that uncovers a sinister cult and otherworldly entities beneath the surface of a seemingly ordinary case.