Trivia
One of the books Stella is shelving is Unheard America, the compilation Poet was included in in Season 2. It even has a picture of Poet on the back cover.
The song that is being played in the background during the scene where Cyril is about to be executed is called "Save me" by Joan Armatrading.
One of the hospitals Nurse Carol previously worked at was St. Eligius, which was of course the name of the hospital on Tom Fontana's 80's classic, "St. Elsewhere".
Dino Ortolanti, the first person killed on Oz, returns to make a few brief comments.