Johnston is a fictional character portrayed by Tuck Milligan in the TV series Oz.
In the first episode they appeared in, titled Famous Last Words (season 4), they were 51 years old.
They appear in 1 episodes out of a total of 56 aired
Episodes1
Famous Last Words
episode S4.E16 february 2001In the Season Four finale, Hill discovers where his true allegiances lie in Oz. Redding's plot to use the Colonel against Morales has an unexpected outcome. Beecher's agony about his parole hearing leads to a shocking season climax.