The storyline is interesting. Many reviewers mention the ending, in which things are not wrapped up completely. Things are left in a morally gray area so it may leave some readers unsatisfied. Personally, I was fine with the ending because it leaves open the possibility of more installments. Also, the morally gray ending was thought-provoking so I appreciated that aspect.
Full review: https://oddandbookish.wordpress.com/2021/10/01/review-whistle/