One night in 1988, 5 people did in the same city with the same symptoms and the same mark in the back of the neck.
Later that night, the wife of the policeman died while she was giving birth. The policeman didn't knew she was giving birth because he was catching the criminal that killed 5 people.
The policeman saw the same person that killed 4 people years ago, And, she was exactly the same.
9 YEARS LATER
Some other people died that day and in the same way that the people died in 1988.
The policeman is a obsessed with finding the truth about the murderer.
9 YEARS LATER
She came back looking exactly the same and killed more people.
9 YEARS LATER
The policeman found out the truth about everything just before hours before his daughter gives birth.