It’s your choice. They’re all fantasies. So, which will your novel look like?
Realist Crime Fiction?
Elf House and Human Apartments
One group looks a little warmer, perhaps.
Or magic realism?
One Man Stares Down the Glut of Icelandic Crime Novels all on His Own
So, there you have it: three fantasies. Don’t let anyone tell you that any of them are more or less real than the others. If you’re looking for realism, you’re chasing a snake without a tail.