The Goddess Hunt by Aimee Carter is a novella spanning the summer when Kate heads back to the real world. To avoid spoilers, you will definitely want to read the Goddess Test first. In this modern retelling of Greek mythology, we see the standard cast of character with some extra angst mixed in. My favorite part of the book is that this story shows another side of Henry aka modern Hades than you see in the full novels.
It’s chance to sneak behind the scenes and see him watching his wife as she reluctantly embraces her semi-annual freedom in the real world. The author’s writing is fast paced and a pleasant read. For fans of the series, it is hard to get enough time in the story world so I would recommend reading. For someone with less time to spend, I would suggest staying with versions one and two and save 1.5 for a later date.