Misleading Title

 The Brothers Hawthorne by Jennifer Lynn Barnes 

The title implies it's about all four brothers, but really it's about Grayson and Jameson. I will hear no Grayson slander. We get time jumps and learn a little about what the boys were like as children. But, mostly it's about them now. Nash has proposed to Libby and that's the catalyst that brings them all together; his bachelor party. Jameson gets contacted by his father and is asked to find a way to earn a spot into the Devils Mercy so he can win the game and earn back the house that his father lost last year. Avery has a much easier time getting noticed and invited into the game, but he does eventually get his invitation. They play it together and she breaks one of the rules by getting into a fight so that he can have a chance. It appears that he has lost, but the person that thought they won, didn't and Jameson was able to explain the clue and won. He refused to give over the prize to his father because he realized that he was just a pawn. Also, his uncle was one of the players in the game and he found out that said uncle didn't know about him until right then, and they form a bond. Grayson has been keeping tabs on his sisters and one of them, Juliet aka GiGi, gets arrested. He picks her up from jail, takes her home, and forms a friendship with her to get into the house to search it for any clues his father may have left that indicate his plans about Avery, and that would lead to Grayson. Turns out the other twin, Savannah, has known about him since she was 14, and their mother has known for almost 2 years. The IRS is involved because of tax evasion issues. And mom's lawyer is a huge creep. He has been stealing from and bankrupting her, and trying to find ways to steal from the twins. Grayson is able to stop that, in front of a judge. He's also able to get the mom all of her money back. The truth about his connection comes out and GiGi is ecstatic to have a brother, Savannah takes some time. Grayson is also getting mysterious calls from someone he doesn't know with a riddle he can't solve. And Eve is back. I couldn't really remember who she was when the book started, but by the end, she mostly came back. This was better than book 3 because the format was different than the previous books, so it wasn't quite as formulaic. But I still maintain that Avery made the wrong choice.