The Eye That Shines in the Darkness (闇に光る目 Yami Ni Hikaru Me) is the 16th episode of Ultraseven.
After going missing for three months while en route to study the planet Annon, Cherry Blossom 9 suddenly reappears and initiates contact with the Terrestrial Defense Force. Landing near Mt. Hades, Moroboshi, Anne and Amagi are sent to investigate. Upon their arrival at the landing site, they witness the craft explode. Afterward, Dan hears something, but the others hear nothing at all. A strange eye is watching him from inside the mountain wall. Meanwhile, a little boy named Hiroshi finds a stone in the shape of a creature Annon around Mt. Hades. Some bullies try to take it away from him, but a giant eye embedded in a tree emits a sonic power to allow the boy to escape. Later that night, the boy is told by a disembodied voice to return the stone to the mountain. Promising to make the boy strong enough to beat his bullies, the kid returns the stone to the mountaintop.
- Dan Moroboshi/Ultraseven (モロボシ・ダン／ウルトラセブン（声） Moroboshi Dan/Urutorasebun): Kohji Moritsugu (森次 晃嗣 Moritsugu Kōji)
- Anne Yuri (友里アンヌ Yuri Annu): Yuriko Hishimi (ひし美 ゆり子 Hishimi Yuriko)
- Shigeru Furuhashi (フルハシ・シゲル隊員 Furuhashi Shigeru): Sandayū Dokumamushi (毒蝮 三太夫 Dokumamushi Sandayū)
- Kaoru Kiriyama (キリヤマ・カオル Kiriyama Kaoru): Shoji Nakayama (中山昭二 Nakayama Shōji)
- Soga (ソガ Soga): Shinsuke Achiha (阿知波信介 Achiha Shinuske)
- Amagi (アマギ Amagi): Bin Furuya (古谷敏 Furuya Bin)
- Narrator (ナレーター Narētā): Hikaru Urano (浦野光 Urano Hikaru)
- Ultraseven (ウルトラセブン Urutorasebun): Uenishi Hirotsugu (上西弘次 Hirotsugu Uenishi)
- Ultraseven Volume 4 Features Episodes 14-17.