Can't say I really liked this story. 
 Maybe it's because I haven't read the Zellie books but I felt the world building weak and confusing. I didn't get to care for the characters or the story. 
 It's a short book/novella, around 120 pages. Not enough to really develop any characters. But again, it may again be because they were already introduced in previous books. 
 I wouldn't recommend this story if you know nothing about it. I guess it may please the one who already know the author's work but personnaly, I'll pass. 
 This book was given to me for an honest review by Netgalley