This one is a twisty and wild ride! I enjoyed it and found myself really interested in figuring out what happened to (or maybe because of??) twin sisters Cassie & Lenora.

I really liked the setting - it gave the whole book a claustrophobic feeling while simultaneously being expansive and isolating. 

The dual POVs and timehopping were a bit tough to follow at times, but it was necessary to the plot and the feeling of impending doom. 

The final twist was good, but leaned to the "too much twist for the sake of an extra twist" side of things for me to really truly get behind, which is why it's a 3 for me.