Gabriel says that Rowena has a "dancer's body", referencing the fact that Ruth Connel, who plays Rowena, is also a professional dancer.
When Lucifer is in the bar, the song playing is "The Cat's in the Cradle", a song all about a poor relationship between a father and son. This is appropriate given Lucifer's strained relationship with his father (God), as well as his desire to form a relationship with his son (Jack).
The beasts/vampires that the team comes across are changed due to being more feral, savage, and not feasting on human blood, which causes them to lose all remnants of their humanity. The show Van Helsing (2016) also features vampires that starve in the wild, which causes them to turn feral.
First appearance of Katherine Evans as Maggie.
The majority of this episode is spent in apocalypse world