3.5/5 Stars. Thank you to Netgalley for an ARC of this novel.

General Description: Rory and her grandmother treasure hunt. Mainly Gram, but Rory is trying to prove herself with this latest call that takes them to Iceland, where Gram and Rory must find Gunnar's brother, Einar, and bring him home to their grandfather, Henning. The theory is: Einar and a band are traveling to open a gate to hell. Will Rory, Gram, and Gunnar be able to stop them before they open a gate and let out demons onto Iceland?

The good:
- Extremely fast paced book, it grips you right away. 
- I do like the magical element of the book
- I think the adventure element and the description of certain scenes were done so well it felt like I was there, which really doesn't happen as often as I'd like.

The missing 1.5 stars:
- I felt the romance aspects were a bit forced and Rory's overall progress was odd?
- While it was so fast paced in the first half, it stop abruptly, which left me wanting more but not in a good way? I wish this book was longer to give more explanation to the world that's being built (if there is not a book 2 I will be sad lol)

Overall: If you're looking for a fast paced, high action fantasy read, this fits the bill perfectly!