Question

Jenkins always seemed to have an uncanny knowledge as to when the landlord or the grocer was pestering me, and he dunned me out of ghost. Explain this line in detail.

Answer 1

Here narrator is saying that his only publisher his having some kind of supernatural powers because when the narrator needed money then Jenkins would demand for a ghost story from the narrator John Hallock.

Answer 2

It was the sheer coincidence that whenever john is in need of money or whenever the landlord or grocer pester him than only jenkins asked the narrartor to write a ghost story for his magzine