Elderly patient admitted to the Royal Hope Hospital apparently suffering from a salt deficiency. In fact, the real Florence Finnegan was probably dead, killed by a shape-shifting Plasmavore who had stolen her identity and entered the hospital, hoping to source a rich supply of blood, off which it lived. This Plasmavore was always accompanied by two Slabs to do its strong-arm work, and was in hiding because it had murdered the Child Princess of Padrivole Regency Nine, and thus was hiding from the Judoon Platoon sent to execute it. Because the Judoon were forbidden to land on Earth, the Plasmavore believed itself safe, until the Judoon transported the hospital to the Moon. The Plasmavore then absorbed as blood as it could, including blood corrupted by fat, alcohol and rich foodstuffs, to disguise itself as a human when the Judoon scanned everyone's physiognomy. When it drank the Doctor's blood, it registered as a non-human and was swiftly executed by the Judoon.