The TV production crew and promotional materials included with the DVDs of "Highlander: The Series" refer to people who have the potential to become immortal but haven't experienced their First Death yet as "pre-immortals." According to William Panzer, pre-immortals "carry within them the seed of their immortality which is triggered by a non-natural death." The movie "Endgame" establishes that the process is trigged by the "shock of a violent death" and that without such a trigger the pre-immortal person will simply age and die as other humans. The First Death can happen many ways beyond intended violence, such as drowning, burning, a car crash, a fall from a great height, etc. It is generally believed by fans but not confirmed that death by disease is not enough to awaken immortality in a pre-immortal and will simply kill them. The related TV series "" confirms that dying of fatal poison will not trigger a pre-immortal's power and they will simply die permanently.