The ghosts of the past always come back.
A detective investigates a series of murders. A possible serial killer might be on a rampage, since the crimes are in the same vicinity, by the same method. However, as evidence points towards the detective, a ghost in red follows him, and he begins questioning his identity. His realization of what seems to be reality results in something far larger and more sinister.
drowning
detective
investigation
murder
serial killer
tokyo, japan
guilt
police investigation
horror mystery
psychological horror