Leo stood at the foot of her bed. Maya’s hands twitched in her lap, writing invisible letters on her thighs. Her chart said Rule out Autoimmune Encephalitis , but the tests were negative. The team had moved on.

Leo’s mind was a blank slate of terror. Then, unbidden, the image of the angry purple bacterium with a crown floated into his head. He heard the silly voice: The King demands his watery tribute.

He ran back to the team room. Dr. Calhoun was there, reviewing a CT scan. “She has a teratoma,” Leo blurted out. “An ovarian teratoma. That’s why the anti-NMDA antibody test was negative—it’s a false negative in the first week. We need a pelvic ultrasound.”