A shooter with detective elements based on the story "The Shadow over Innsmouth" by Howard Lovecraft. In the story, detective Jack Walters goes to investigate the disappearance of a man in the old port city of Innsmouth. He does not yet suspect that soon all the locals — followers of the mysterious cult of Dagon — will declare a hunt for him. Jack is an ordinary person, so throughout the game his mental state is under threat. After seeing something unimaginable — and there is a lot of this in Dark Corners — the hero can not only lose the opportunity to shoot accurately, but also go completely crazy.