There's 'creepy/spooky' episodes but not out-and-out supernatural ones, as far as I remember.
I must declare my 'specialist' interest in crime fiction, and Wycliffe in particular. I possess and have read nearly all the published works of the series, and enjoy them immensely.
I've lived and worked (for a short while) in Cornwall, so I love the scenery in the series for bringing back memories etc. Yeah, I know, it has it's moments when places are ... er ... out of place, such as the aforementioned going through a gate which - if existing - doesn't actually lead to where shown. A particular back-alley seen in an early part of
A Fish Called Wanda does this to me, as do scenes in several movies that are shot in the Brompton Cemetery (
Johnny English and
Sherlock Holmes being notable).
The excuse I can see being reasonable is that for many non-aficionados, the irregularity isn't visible. They're watching the plot, not the scenery for familiarity. We must accept that some things in a book cannot be translated to a visual medium. Like unfamiliar settings lead to info-dumps and internal dialogue becoming 'stating the obvious' to a second character.
I enjoy the
Wycliffe series for two separate reasons: I like being reminded of familiar scenery and - unconnected, sort of - watching a plot unfold or a story told.
And as far as real-life procedures being overlooked, well ... it's for dramatic effect isn't it? Why would a senior lab pathologist undertake criminal investigation when that isn't their job? Why would a copper over a certain rank be 'on the beat', interviewing suspects? It's
drama. And often, real life isn't very dramatic.
This is why soap operas aren't about real life. The incidents portrayed do happen, granted, but not in such a limited milieu and in such a short space of time. Generally. It is obvious that the setting for
Midsomer Murders is too crime-ridden for reality in the same way that Jessica Fletcher in
Murder, She Wrote would have no friends because this would ensure that at some point, they'd be suspected of murder!