Kepstadur Keep by RG Sartain

All magic has a price. Sonja and her sister vowed to pay anything to revive their little brother, even if their own blood is the currency. After years chasing folktales, a single rumor remains: Kepstadur Keep. This once-decadent port rots at the far edge of their home country, harboring memories of the lost or forgotten. With the help of a foreign mercenary, Sonja dares to pluck at the strands of Kepstadur’s magic, risking her life to understand its secrets. But something malevolent lurks in the depths. If the castle proves itself more clever, Sonja could lose more than a brother to death’s soft voice.

Adult • Fantasy/Sword and Sorcery • Mystery, Thriller, and Suspense/Supernatural and Paranormal • Horror/Paranormal Creatures • Fantasy/Dark • Fantasy

Content Warning: adult language, blood, violence, bigotry, and overall themes of death and grief. Also bugs and zombies.