Touched by Darkness by Harleigh Beck - Paperback

Touched by darkness and dipped in black ink, I call him out from the shadows where he hides, waiting to torment my nightmares.
After bringing sin into Eden, I do the one thing I should never do. Something I know will backfire.
I make a deal with Amenadiel to help me escape Eden.
Sin changes you. It invites the darkness inside to slowly feed on the last remnants of light.
And if I’m not careful, it’ll devour my soul, too.

Touched by Darkness is book 2 in the Sins of the Fallen trilogy. It can't be read as a standalone.