I received this audiobook in exchange for an honest review. 
I listened to this one over a few days. I enjoyed the back and forth POV from Owen and Sienna. Keeping the killer secret but giving the occasionally chapter with their POV added intrigue and mystery.
Unfortunately, I was pretty sure who the killer was early on, but it was a good listen none the less. Molly was easily my favorite character, just wholesome and kind. I didn't care much for the main characters Owen or Sienna. I found Leo annoying from the start, and that never changed.

The whirlwind love story of an unlikely couple from 2 different worlds. Sienna is left wondering if everyone is right, how well does she really know her husband... while trying to figure that out, she is faced with reasons to not trust anyone on this secluded island that used to be her safe space.

A twists in the end chapter revealed during a conversation between Sienna and her mother, I was confused when this wasn't revealed earlier as it felt obvious so I'm glad all the loose ends were tied in a nice bow.