The landmark series-WITCH'S CRAWL

The Great landmark located in the eastern part of Wales. With its rich fruits and vegetations, ruled by the great Duke victor the third and duchess magret for many yearsand yet they never knew something odd occurs in landmark, from the miscarriages the duchess faced and the deaths of some high council. They still chose to be ignorant to the fact that evil lived in landmark.

An angel is sent "bethel" for an important mission what's gonna happen? Find out.