Es no Houteishiki

"Es no Houteishiki" is the second game in the Detective Suzusaki series. The events described in the previous game, "Kuro no Danshou ~The Literary Fragment~", led to a series of suicides, but the case was believed to be closed. But Kusanagi, the young brilliant psychologist and assistant of the famous detective Suzusaki, has now to face his own past. The traces lead to a remote village, which has seen nine mysterious, unsolved murders in eleven years. Soon, Kusanagi discovers a strange religious cult, that might shed some light on his past...

[From Moby Games]