本作改编自岩井圭也小说《最后的鉴定人》《科搜研之砦》，讲述孤僻的怪才鉴定人与怪咖研究员通过科学手段破解疑难案件。藤木直人饰演前科搜研王牌、拥有顶尖鉴定技术的主人公土门诚，白石麻衣出演在土门鉴定所工作的心理学专家高仓柊子。两人从案件痕迹中抽丝剥茧，以科学利刃刺穿真相。

该衍生剧讲述了社交能力强、恋爱经验丰富却对人类恋爱感到厌倦的青年功介，意外坠入两段“非典型恋情”的成长故事。在决定只爱动物后，功介对住院的狗狗“优卡”一见钟情，并暗恋着狗咖啡店“Lovely Tails Café”的店长宫濑优香。然而，无论是面对优香还是优卡，向来自信满满的功介都发现自己毫无胜算，陷入苦恼。故事聚焦于他“败犬”式的情感挣扎与内心成长，是本篇未曾呈现的另一面恋爱插曲。

故事设定在第二季事件的152年后。

此剧改编自同名网漫，讲述有一天人类的头顶出现了肉眼可见的"红线"，这条线连接到了与自己有肉体关系的人。在一夜之间展现了自己阴暗面，现实地讲述了各种社会故事。

The series is inspired by a real elite Mexican police unit that catches American fugitives on the run to Mexico. 　　The series will be coming to Netflix in 2025 and promises to delve into the reality of the International Liaison Unit, with mysteries to solve, suspense, twists and turns and the challenges and intrigue faced by this type of police operation.

In quick succession, Wan loses her job and her father, suddenly inheriting her father's grocery store, crumbling away during hard times. She soon meets hardworking and flirtatious store regular Maewnam. Maewnam is supportive of Wan's efforts to turn the business around, but she's hiding the truth about her family's business which threatens Wan's plans.