The Hawthorne Legacy by Jennifer Lynn Barnes

The Inheritance Games ended with a bombshell, and now heiress Avery Grambs has to pick up the pieces and find the man who might hold the answers to all of her questions - including why Tobias Hawthorne left his entire fortune to Avery, a virtual stranger, rather than to his own daughters or grandsons.

Thanks to a DNA test, Avery knows that she's not a Hawthorne by blood, but clues pile up hinting at a deeper connection to the family than she had ever imagined. As the mystery grows and the plot thickens, Grayson and Jameson, the enigmatic and magnetic Hawthorne grandsons, continue to pull Avery in different directions. And there are threats lurking around every corner, as adversaries emerge who will stop at nothing to see Avery out of the picture - by any means necessary.