If you're looking for manga similar to Strangers From Hell: Serial Murder Case, you might like these titles.
When a new serial killer arises in her city, Finn suspects that he may be related to her past. Against her better judgement, she decides to pursue him in hopes of finding answers. Shortly after, Finn meets Isaac, who reminds her too much of the mysterious boy from her past...
For Na-Young, school was her only haven. However, that was only before these 'things' appeared one night in school.
The Purger, a serial killer is lurking around the dorm. Can Dan find who it is, before he himself is killed?!
A secret experiment on serial killers conducted in the woods? What could possibly go wrong? Follow one young researcher’s descent into madness and self-doubt as she attempts to escape a locked facility with ten bloodthirsty murderers. Will she make it out with her humanity intact?
What would you do if you found out that your neighbour is a serial killer? But more importantly - what would you do if some unknown third person was trying to make you kill him?!
On a hot summer's day, Sanghyun's wife is approached by Ingyu, an old friend of her husband's. Although she is wary of his eerie looks and strange demeanor, Ingyu quickly reconnects with her husband, moving in with the two soon after. But after they invite him in, strange things begin to happen…
Having escaped her abusive mother, twenty-year-old Ji-a lives a modest life with her little sister, Su-a. When Su-a does not return from her field trip under sinister circumstances, Ji-a vows to do anything she can to get her sister back. As she and her high school friend Wonseung delve further into the mystery, they find that there might be a larger conspiracy under the surface -- a tangled web that includes a cult, a mystery, and powerful figures that might shake South Korea to its core.