Ep 4. Ghosts Don't Scream

Rin ~ Daughters of Mnemosyne season 1 episode 4, titled "Ghosts Don't Scream," follows the immortal private investigator Rin and her assistant Mimi as they are hired to investigate a series of disappearances at a local high school. The episode is set in Tokyo in the year 1990 and begins with Rin and Mimi interviewing a teacher at the school who tells them about a ghostly student who has been haunting the halls at night.

As they investigate further, Rin and Mimi discover that several students have gone missing over the past few years, and they soon begin to suspect that the ghostly sightings may be related. They visit the school at night to try and catch a glimpse of the ghost, but instead they find themselves face-to-face with a terrifying monster.

The monster proves to be incredibly strong, and Rin and Mimi barely escape with their lives. They regroup and plan their next move, eventually discovering that the monster is being controlled by a group of students who are using it to exact revenge on their tormentors. Rin and Mimi are able to put a stop to their plans, but not before uncovering a dark secret about the school's history.

Throughout the episode, Rin and Mimi's relationship is explored further, with Mimi expressing her fear and concern for Rin's well-being as an immortal. Rin, meanwhile, continues to hide her true nature from Mimi, but her mask begins to slip as she is forced to confront the monster head-on.

Overall, "Ghosts Don't Scream" is a thrilling episode that combines elements of horror and mystery. The dynamic between Rin and Mimi continues to be a highlight of the series, and the episode's twist ending adds an extra layer of intrigue to the ongoing plot.