As is my bent, when I read a book I like by an author, I tend to read everything they ever wrote. I enjoyed Cass' Selection series, so I decided to give this standalone a try. I have to say, it was a fairly original story. The main characters are mythical sirens, doomed to do the bidding of the ocean for 100 years before being able to return to mortal lives. The work that the ocean requires of them is to provide a steady diet of people for it to consume. If natural disasters or shipwrecks don't provide enough human life for the ocean to sustain herself, she has the sirens to lure mortals into the ocean where they drown, sustaining the ocean. All this murder (as she sees it) takes a heavy toll on Kahlen, the protagonist of the book, who has been a siren for 80 of the required 100 years. She dwells on the lives she has taken, and takes to memorializing them in scrapbooks of newspaper clippings and printouts of social-media posts. I won't spoil the plot here, but it is interesting, and surprisingly introspective. Make no mistake, this is YA fantasy-romance. It is not deep or literary. But it was a fun read, and I was impressed by the originality of the treatment of the mythology of sirens. I also enjoyed the relationship dynamic between the "sister" sirens and especially the relationship between the Kahlen and the ocean (who is a body-less voice that the sirens can speak to when touching water). Overall, I would recommend this book to those that enjoy YA-fantasy or romance.