Imagine a world where humanity is no longer the apex predator. Lamias rule the subway tunnels, harpies control the skies, and arachne have turned downtown skyscrapers into vertical webs. A "lost case" here isn't just a whodunit; it's a situation where the human protagonist has already lost. The evidence is destroyed. The legal system (what remains of it) is biased toward the new non-human overlords. The detective is outgunned, outmatched, and outnumbered.