Princess of Shadows by Shari L. Tapscott

Madeline Bennet has a quartet of knight marshals at her beck and call, and they’re all driving her mad.

It’s only been a week since she was kidnapped, and Rafe’s already coddling her, Gray’s turned into a surly taskmaster, Eric’s trying to steal her cat, and Jonathan is entirely too charming for anyone’s good. Only one of them knows her secret—a secret she plans to take to the grave. Unfortunately, that plan falls through the moment a creature of shadows shows up on her doorstep.
It’s cute. It’s fluffy. It’s evil.
And Madeline is its master. More are coming, but there’s nothing the future Obsidian Queen can do to stop them, not while she’s posing as Jonathan’s wife at a luxurious haunted mansion in the heart of Colorado.
Leaves are falling, pumpkins and scarecrows line doorsteps, and romance and death are in the air. Before she can find a way to keep the darkness at bay, Madeline must find a killer, drink cider, and not fall for the team’s most promiscuous knight. A task that’s proving to be harder than expected…