I really like this world that Abigail Kelly has created and I love that each of her books I've read have made me want to read more by introducing new side characters and aspects of the world. This newest book does standalone (all of hers do) and there's a glossary at the end of the book that explains a lot of the world building, which can be a bit confusing as territories and species are brought up without delving into too many details. Although that does mean no info dumps. The back of the book is also where the content warnings are, which I still don't love but not my choice!
Empire focuses on Harlan (H), a retired vampire assassin, and Zia (h), a green witch who's a rosarian (which I had never heard of). Zia has been working with the roses at Harlan's estate for a year while secretly fantasizing about her boss, who she only catches glimpses of. Harlan has been pining for Zia for the same length of time, monitoring her comings and goings, making sure she's safe, and wanting her while being worried pursuing her puts her in danger from past enemies. Then Zia breaks the cardinal rule of the estate and ends up there after dark, where she gets her first face-to-face meeting with Harlan. This was a really sweet romance with a lot of descriptive language and well-rounded characters. It is slow paced and mostly relationship-focused, with a touch of danger/suspense late in the book. Written in third person, dual POV. No ow/om drama (H is VERY jealous/possessive and instinctual about this) and neither are virgins (both have been celibate for a while).
Harlan has to figure out how to woo Zia and despite her initially having some prey/predator responses and thinking her fantasy is out of reach, their relationship goes very quickly. It's almost insta-love but there's still some development with sweeter moments like going on dates. Harlan wants Zia to be his anchor, which is a mate for a vampire. An anchor is cherished and protected, also providing sustenance for their vampire. Harlan does open up about his past before Zia commits to him. Zia comes from a loving family and Harlan comes from the opposite. I loved them together, with Zia's brightness adding to Harlan's life and his protectiveness and spoiling of her. As a witch, Zia can also form a different kind of bond with Harlan. In addition to the bonding, their relationship does get steamy and there are a few scenes that are explicit. I would have loved a primal play scene, but sadly we did not get one. He is a vampire so feeding does happen during sex.
Side characters include Harlan's head of security and his sister, who Harlan treats as a son and daughter. I want a story of the head of security badly, he was an intriguing character and there is a hint of a possible future story with the sister. Zia's family make an appearance and I liked their protectiveness and care of her. Harlan has a whole security team and a couple others are mentioned specifically.
There were plenty of descriptions of these two settling into a new relationship and life together. Harlan's past does make an appearance and there's some danger and suspense, along with brief descriptions of violence. I liked the resolution and that it wasn't rushed, but also didn't take up too much of the story. They do get a HEA with an extended epilogue that's several years in the future and adorable, married with kids, leaving me happy as well. I do recommend this author and world, but her writing style is fairly wordy and may be too slow for some readers.