- Type: TV
- Studio: Bones
- Publish Date 2007-04-06
- Status: Completed
- Genre: Action Adventure Animation Comedy Crime Drama Fantasy Horror Mystery Sci-Fi Thriller
- Scores: 2.53 by 4,405 reviews
- Duration: 24 min
- Views: 573
Darker than Black
A spatial anomaly called "Heaven's Gate" first appeared in South America ten years prior to the series' events. Then "Hell's Gate" opened in Tokyo, changing the sky and wreaking devastation on the surroundings. At that time, "Contractors," or individuals with unique talents and supernatural prowess, began to appear. Contractors commit cold-blooded murders while keeping it a secret from the public and suppress their emotions with reason and rationality. Their name comes from the fact that they must "pay the price" each time they use their capabilities, which they obtained at the expense of their humanity. Contractors are trained and used as spies and assassins by nations and organizations all over the world, leading to bloody conflicts over valuable items and information.