The central mystery of the episode. A magician experiences cardiac arrest while performing a water tank escape, followed by widespread internal bleeding and multi-system organ failure. The diagnosis is revealed to be lupus causing autoimmune production of blood type B antibodies, which combined with his natural type A blood to create a type AB blood signature, leading to transfusion reactions and DIC when given the wrong blood type.
Also known as: DIC
The patient develops widespread bleeding throughout multiple organs (intestines, spleen, heart, kidneys, thigh) caused by DIC secondary to transfusion reactions from undiagnosed lupus-induced blood antibodies.
Also known as: Heart stopped
The presenting symptom that brings the magician to the hospital - his heart stops while performing an underwater escape trick. Initially attributed to drowning, later revealed to be caused by the underlying lupus.
Also known as: Kidney failure
The patient's kidneys shut down as part of the multi-system failure caused by lupus and DIC, leading to sodium deficiency and seizures.
Also known as: Huntington's disease
Revealed that Thirteen's mother died of Huntington's disease, giving Thirteen a 50% chance of having the condition. This subplot explores her decision not to get tested for the genetic disease, which becomes a major character arc throughout the series.