"Ten years after Sofia was killed in a tragic accident, her college ex Caroline and her former roommate Brooke almost have what they've always wanted. Caroline is on the precipice of scoring funding for her feminist tech startup. Brooke is newly engaged and starting her dream job at a prestigious prep school. But unless the two best friends can cheat fate a second time, one night's secrets could unravel everything. When Caroline gets threatening comments on her company's Instagram and Brooke receives a sinister email with ominous photos attached, all from "Sofia," their carefully constructed facade begins to crumble. And when one of their last connections to "Sofia" turns up dead, they must decide how far they're willing to go in order to survive. The devil's in the details, and the tiniest mistake could prove fatal. Just one thing is certain: nothing is as it seems in this sinister series of events, and readers will never guess where this rabbit hole of revenge will lead. Prepare to have your allegiances shift along with every twist and turn. What was set in motion long ago is hurtling toward a jaw-dropping conclusion that will shock even the most hardcore thriller fans."-- Provided by publisher.