Julian R. Vaca

In a world where memories are like currency, dreams can be a complicated business. In an alternative 1987, a disease ravages human memories. There is no cure, only artificial recall. The lucky ones--the recollectors--need the treatment only once a day. Freya Izquierdo isn't lucky. The high school senior is a "degen" who needs artificial recall several times a day. Plagued by blinding half-memories that take her to her knees, she's desperate to remember everything that will help her investigate her father's violent death. When her sleuthing almost lands her in jail, a shadowy school dean selects her to attend his Foxtail Academy, where five hundred students will trial a new tech said to make artificial recall obsolete. She's the only degen on campus. Why was she chosen? Freya is nothing like the other students, not even her new friends Ollie, Chase, and the alluring Fletcher Cohen. Definitely not at all like the students who start to vanish, one by one. And nothing like the mysterious Dean Mendelsohn, who has a bunker deep in the woods behind the school. Nothing can prepare Freya and her friends for the truth of what that bunker holds. And what kind of memories she'll have to access to survive it.

What if everything you remember is a lie? Freya Izquierdo and Fletcher Cohen believe they’re done with top-secret memory knifing. After successfully hacking a terrorist’s memories and foiling the Memory Ghosts’ next attack, they spend their school break intending to clear Fletcher’s dad of being accused of colluding with the radical group. Exposing the truth should be straightforward, if not easy. But Fletcher’s house is robbed, and Freya makes a shocking discovery about her flawed recall. When they return to Foxtail Academy, no one but the dean and Dr. Sanders seems to remember Freya, Fletcher, and their friends Chase and Ollie. Then the Memory Ghosts make contact, and everything the four students thought was true proves false. As they struggle to shine light on the shadowy battlefield between Memory Frontier and the Memory Ghosts, their only option is to undertake the most difficult and risky knifing mission of their lives. But this time, more than their lives are at stake. In this heart-stopping and gripping conclusion to the critically acclaimed Memory Index duology , the only way out is in, and the only way to safety is through reckless danger that could wipe Freya and Fletcher from everyone’s minds . . . forever.