This season finale was supposedly rewritten eight times because Starz wasn't happy with it.
Due to a cut in New Media's threat to Shadow, the first newscaster was meant to resemble the alien species in They Live (1988).
When Shadow sits up from the top of the tomb while talking with Laura, the epitaph reads "She hath done what she could". This phrase comes from a Bible story where Jesus tells his followers not to judge a woman harshly for her perceived mistakes, drawing a parallel to Laura's actions.
Bilquis's quip to Laura about "dig two graves" is a reference to the Japanese proverb (often misattributed to Confucius), "Before you embark on a journey of revenge, dig two graves."