I have been re-reading the glowing reviews of this book, wondering if I read the same book. I haven't read a Women's Murder Club book in a while. Perhaps with my increased reading during Covid, I have moved on to better, more sophisticated writers of thrillers. The 21st Birthday could barely hold my interest. I skipped pages when the writer continued to repeat facts previously told. I skimmed through pages where too many details were shared about an unimportant story line. Then, when an interesting story did get introduced, it was never resolved satisfactorily or even realistically. Too many sub plots with no endings. Even the book ending was abrupt and flippant. I found the entire book lame.