Spirits of Sapience by Alex Hackett

A castle. A war. A battlefield of undead. Magic and mystery. Potions and poison. Escapes. Lies. Theft and torture. Beautiful fairies. Courageous werewolves. Evil gnomes and lost giants. Death and disguises. Strange professors. Love. Hatred. Mermaids in danger. And elves with secret passions. This is Sapience. In 1948, humans are not the only ones recovering from a devastating war. A decade-long conflict has shattered the Spirit world. Now, the magical inhabitants of Sapience University must reckon with the aftereffects of war. Yet there is something unusual about Sapience. It is a gloomy, isolated castle that has stood empty for years. It is scarred from the many battles that occurred there. Now, it is being reopened to integrate Spirits of all species - and even those in between. However, danger lurks around the school. The castle has just as many secrets as its students.