Code-breaking genius William Wenton returns to the Institute for Post-Human Research in hopes of discovering why the intelligent metal luridium in his body seems to be causing seizures, but while there he encounters secrets, increased security, and threats from an enemy he thought was frozen in the basement.

Originally published in Norwegian in 2017 under title: Kryptalportalen. Originally published in English as hardcover in 2018 by Aladdin.