Spoiler alert: This post contains plot from the April 18 episode ofRiverdale.
And, on opening night, there was a murder.
Only that last thing wasnt scripted.

Credit: The CW
And there was a message next to her body: I am back from the dead.
All those who escaped me before will die.
The message, which was written in blood, was signed by none other than the Black Hood.
That means a serial killer is once again on the loose in Riverdale.
The Black Hood coming back pushes us into the last four episodes, where the threat is immediate.
It brings us full circle not just to the beginning of season 2 but really to season 1.
The Black Hood is back and angry.
Riverdaleairs Wednesdays at 8 p.m.
ET on The CW.