Abby Hart knows that she's destined to die at Karakh. After putting the moment off for as long as possible, she finally arrives to face her fate, only to discover that a demonic force has already begun to enter the world. Meanwhile, Jonathan has to face the horrors of his past and Emilia struggles with the knowledge that she's the last of her species. As the Demon's Grail trilogy comes to an end, vampires and spiders alike are united in one final attempt to defeat an evil from the dawn of time. Demon's Grail – The 13th Demon is the fifth book in the Abby Hart series. This is the 2022 edition of the original 2015 book.