House in the Shadows.
I don't remember the name of the author, and I've searched for it online for years, but the synopsis of every book named House in the Shadows that I find online, sounds absolutely nothing like what I read. I just remember the book had a solid red cover, black binding, and the rather plain two-story Victorian looking home on the cover. Very minimalist in design. Between 300-340 pages.
I read it the first time when I was only 13, and it inspired me to attempt to be "heroic," or at least what amounts to heroism to a young teenager.
I read it again at 19 and realized I had missed one of the underlying messages, which was of course, "pick your battles wisely because you can't fight them all." Using that knowledge and realization, I proceeded to pick a fight that seemed worthy, but still landed me in prison for a time.
I read it again at age 25, found it in the prison library, and realized I had once again, missed yet another hidden message in the text. "Don't pick a battle, you aren't sure you can win. However, if you must fight a losing fight, don't fight it fairly. Honor is useless to the vanquished." Once I was released, the realization that I had missed something so simple, among other things, sent me into some dark places.
I'm now 30, and I've discovered that "fighting fairly" has absolutely no meaning to me anymore. Honor and chivalry are dead and have been for quite some time. I clung to ideals that only I found value in. This was pointless.