Nyx - Tales of Aeden, #3

Navigate through the forest, defeat the necromancer, retrieve the book. Danger isn't something new for Akira and his brother, who lead the lives of sellswords. But when the mysterious sorceress Lachinna approaches them with a task nearly impossible, everything changes. The two brothers must navigate their way to the castle of a seductive necromancer by the name of Nyx, and retrieve a book of value from her.
Only, nobody has managed to get out alive from the castle of Nyx, and the brothers must be the first to do so, otherwise their sanity and dignity will no longer be theirs to keep. Two brothers, one deadly mission. Is the book worth it, or is an eternally blissful slavery the answer to the brothers' prayers?