in the early 90s I read through some of my dad's book collection. I'm pretty sure that the story in question was spread over multiple books and would love to reread it/them now I am older. They were by no means new and would either have been early 1980s or 1970s.
The main character in this story had his wife and child(or multiple children) taken away by a sinister demonic character and the story was about the main hero trying to trace the demon type down in the hopes of reuniting with his beloved. Whenever he would go home or to a safehouse, he would spread a perimeter of salt to prevent any paranormal activity and would ally with various characters to achieve his goal.
That's about all I can remember! Useless right? Hopefully one of you geniuses can give me a pointer!