Trust is an imperative element of paranormal romance novels.
The paranormal romance author trusts the reader to make the leap and the reader trusts the author to make it believable. As a reader who often indulges in historical romance for escape, Amanda Quick books are some of my favorites. I'm a big fan of the Arcane Society series written under all three names Quick/Krentz/Castle and in all three time periods.
An analyst could look at Krentz's career and have enough for an in depth