Human Specimens

About Human Specimens

Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens."

Prime Video's Human Specimens is a crime and mystery series. Its themes are butterfly, thriller, and psychological.

It reached one season of 5 episodes from December 2025.

Hidetoshi Nishijima leads the cast as Professor Shiro Sakaki, Somegoro Ichikawa as Itaru Sakaki, Rie Miyazawa as Rumi Ichinose, and Aoi Ito as Anna Ichinose. The series began as a novel. Produced by Amazon MGM Studios.

American members can watch it on Amazon Prime Video and Amazon Prime Video with Ads. You, MINDHUNTER, and Killing Eve make useful companions to Human Specimens.