Night Cascades by Hanako Games

Diane Carter never expected her folklore degree to get her a job offer from the local police department, but when a rash of occult-themed fires sets the city on edge, she is called in as a special consultant on esoteric religion to help find the culprit.
There’s just one problem: the woman she’s assigned to work with. She’s cocky, beautiful, and far too familiar.
Can Diane and Jackie overcome the obstacles of their past and find the truth?
        
Set in an alternate New Age 1980s where belief in paranormal powers and secret Satanists is at its peak, but same-sex love is still taboo. 
Night Cascades is a linear visual novel with minigame elements as the detectives search for clues and interrogate suspects to solve their case.