Of Magic and Engineering — Lyn Brittan

Prudence has spent the last three years abandoned by her husband, selling off anything of value and getting advice from an undead goat.
The joys of life, really.
But even this is about to come crashing down now that Roland has returned. He's fixing up Balloc Manor and, even more worrying, being kind about it. She'd rather he went back to wherever he came from, but when Roland claims that both their lives are in danger, they must work together or risk it all.
It won't be easy. She has a dozen questions, but wonders if even one of his answers can be believed. Can she trust him? Will he tell her the full story? And what in the hell is that awful ticking noise that seems to surround him? If she doesn't find out soon, it could be the end of all of them.