Netflix’s latest Taiwanese drama series, Had I Not Seen the Sun, follows a convicted serial killer (played by Tseng Jing-hua) who agrees to a documentary interview after years of speculation surrounding his motives. Chen Chi-chiang plays Pin-yu, the young crew member who manages to persuade the killer Li Jen-yao to open up, while Moon Lee and Lyan Cheng co-star as pivotal characters from his tumultuous youth.

It has been nine years since teenager Jen-yao embarked on a frenzied killing spree, butchering several of his classmates in a series of grisly attacks that prompted the media to dub him “The Rainstorm Killer”. He turned himself in and was convicted soon afterwards, but Jen-yao never revealed his motive.

Now it is 2023, and documentarians Ta Wei (Umin Boya) and Chien Yi (Sonia Yuan) have been trying in vain to secure an interview with the murderer, that is, until their timid assistant Pin-yu asks.

Read my full South China Morning Post review