There are 3 books in the Arrangement Novels series. The newest book is The Atonement which came out in 2022.

1
The Arrangement

Book cover of The Arrangement

A #1 bestselling novel from award-winning author Kiersten Modglin...
Fans of Gone Girl, The Swap, and My Lovely Wife are sure to be gripped by this fast-paced, scandalous, and completely twisted story.

Domestic thriller readers are raving:
"...my new obsession!"
"...that ending shook me to my core."
"I was sure…

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2
The Amendment

Book cover of The Amendment

The dark, scandalous, and completely twisted sequel to Kiersten Modglin’s #1 bestselling domestic thriller, THE ARRANGEMENT…

First, there was the arrangement.
A simple, yet salacious fix to the problems looming in their marriage.
But when things took a tragic turn, Peter’s and Ainsley’s lives quickly fell into disarray.

Now, their…

3
The Atonement

Book cover of The Atonement

The highly anticipated, nerve-shredding conclusion to the #1 bestselling ARRANGEMENT trilogy…

First, there was THE ARRANGEMENT—a scandalous story about Peter and Ainsley Greenburg’s attempt to fix their marriage, no matter the cost.
Then, came THE AMENDMENT—with their darkest secrets revealed, the couple set out in a treacherous attempt to repair…