Oz: Season 4 is an exceptional installment of the series, as it is the only "double-length" season, containing a total of 16 episodes. The season originally aired in two eight-episode installments from 2000–2001.
In season four, tensions in Oswald's Emerald City Unit reach a fever pitch, with racial tensions and power struggles dominating daily life as the inmates return to their cells after a two-week lockdown.
