A Name Written In Water (S02E08)

Alison hurries to the hospital to be by Robert's side as he lies in a coma, only to encounter an irritable Jude, who is clearly not pleased with her presence. While waiting in the hospital, Alison, who has psychic abilities, notices a peculiar nurse moving through the hallways. Other staff members corroborate her sighting, sharing whispers about this mysterious figure. What is her purpose, and could her presence signal trouble for Robert?