A young Enterprise lieutenant who contracts the radiation-induced ageing sickness on Gamma Hydra IV and becomes the first member of the landing party to die of old age.
Lieutenant Arlene Galway is a member of the Enterprise crew in the second-season Original Series episode The Deadly Years. She was played by Beverly Washburn.
Galway beams down to the research colony on Gamma Hydra IV with Kirk, Spock, McCoy, Scott and Chekov, and finds the scientists there dead or dying of extreme old age although none is past thirty. Within hours every member of the party except Chekov begins to age by decades each day.
Her first symptom is a loss of hearing. As the condition advances she grows frightened and confused, at one point asking why the mirrors on the ship make her look so old. She collapses and dies in sickbay before McCoy discovers that adrenaline, which Chekov produced in a moment of fright, is the cure.