Spiral: The Bonds of Reasoning Episode 17 English Dubbed Episode Title:The Watcher in the Darkness.Episode Description:As Hiyono and Rio have been held hostage in an abandoned hotel, Ayumu, Ryoko, and Kousuke must navigate through the traps and explosive devices set up on each and every floor by the Hunters. But with time ticking, it will take more than just puzzle solving to rescue the gals.