Halloween's real horror story

'BTK KILLER': DOCU-FILM REVEALS MONSTER BEHIND MASK >>> Rawson's tale is more terrifying than fiction because it's true. And it's family.

- Hein Kaiser

(Pictures: Supplied)

It's spine chilling and it's scary as hell. Who would ever have thought that a documentary can feel like a horror custom made for Halloween.

The Netflix docu-film, My Father, The BTK Killer is like an ice cold slap in the face. Because it literally proves that killers can walk among us, sometimes for years, and none of us would be the wiser.

Now, imagine that that serial killer is your dad, your husband, your uncle or your friendly neighbour. This is what happened to Kerri Rawson, whose father turned out to be the notorious serial killer BTK, his own acronym for bind, torture and kill.

He was finally arrested in 2005, when Rawson was 26.

Dad's name: Dennis Rader, a monster who tied victims up, hurt them and slaughtered around 10 people between 1974 and 1991.

Rader remains the suspect in several other unsolved murders. He is now 80 years old.