Biblioholic's Bookshelf - Dark of the Moon by Dan Ross

A gothic by Dan Ross aka WED Ross who wrote many Dark Shadows novels under the name Marilyn Ross. This one's copyright 1969.

Biblioholic's Bookshelf - The Dark Sonata by Beatrice Murray

A fairly recent acquisition. Gothic with a bit of variation. We have heroine in very early-seventies attire fleeing a more standard mansion inmist. This dates from 1971, and the copyright is Richard Posner, who apparently wrote under his own name and a number of pseudonyms in various genres.