I gave 'Fifty Fifty' and 'Liar, Liar' the mediocre reviews I felt they deserved. 'Hush' (originally 'Hush, Hush' when I first came aware of it ) is infinitely better.
'Hush' resolved the problem of 'Liar, Liar'. A great deal of the book is about the three main characters, delving into their personalities, both sad and rather brutal self-examinations since 'Liar, Liar'.
'Hush' is far more tightly written than either 'Fifty Fifty' or 'Liar, Liar'. The mystery story line is tightly woven into the character story lines.
I've said before, I'm not reading much of Patterson anymore, certainly none of his stand alones nor any new main character books. I'm glad I took another chance on Harried Blue. Of course, that was sheer stubbornness on my part. I would request the library purchase 'Hush, Hush', they would say it was 'on order, then it would be cancelled because it wasn't published in the the United States and we would repeat that dance every few months.
I enjoyed 'Hush' immensely and I like Harriet Blue a lot better than I did when I first met her. She finally has some depth.