In the movies, do serial killers study cell phone coverage maps to pick a good place to stalk? lol?

Question

A spot where there is no coverage?

Answer 1

It's a very good question.
The psychology makes it look so, but
it's an illusion created by hindsight.

Consider this:
There would be many serial killers, but the
ones where there is cell phone coverage get
reported and caught. Thus the movie can never
be made (not enough people can die).