I bought the first book years ago but now I'm really glad I waited until the last book was published before I started reading this series.
After I picked up the trilogy I couldn't put it down until I'd finished the last book. It captivated me so much, I had dreams about Penryn and Paige. I loved Penryn's strength and what was done to Paige broke my heart. Their connection and the storyline reminded me The 5th Wave but it didn't bother me a bit. The angels were scary and the bond between Penryn and Raffe was amazing. It was born out of necessity and grew into mutual respect and friendship. The world was spooky and the story had some really heart wrenching moments also some hilarious ones like Raffe and Penryn bickering about Pookie Bear.
My only complaint is that I want more. I need to know what will happen to the characters next. The author tied up most of the loose ends but I still have questions.