After regrouping with Ellen Kiel at the crime scene, Marjory lent me a device that detects energy fluctuations: she called it the Tassi box. Anything that came into contact with the arcane residue left behind from the attack should glow after being scanned, helping us find our culprit. While testing the device, we caught a trace of residue on one of the medics—a woman named Mai Trin. That turned out to be a false positive, though, as she'd been in contact with the wounded while tending to their injuries.