If you like necromancy, demons, unending betrayal, and moral ambiguity, you need to be reading more books by Mitchell Hogan!!!
This series is perfect for anyone who loves the traditional Swords and Sorcery fantasy. The world, split between this series (Necromancer's Key), the Infernal Guardian, and the Tainted Cabal, is truly intricate and exciting. Each series follows a separate side of the world but seem to be getting closer to intertwining as we move forward (Ooh gosh I hope so. Tarrik would really give Anskar what-for). In this series, we follow Anskar, raised to be a devoted religious knight but with a past that won't let him follow that path easily. We also follow Carrad, loyal bodyguard and lover to the long-dead Necromancer Queen. This book takes a lot more rapid turns than book 1, and really leaves you wondering what the hell will happen next.
Personally, I would have loved Anskar to have more agency in this book. He's a fascinating character but he was difficult to engage with when his main role was to react to things. The other characters made up for it this time, but I really hope book 3 brings him into his own.