The opening quote, "Only you shall not eat the blood; you shall pour it out on the earth like water," is from the Bible, Deuteronomy 15:23.
The Black Claw recruiter (Jesse Collver) is named Donald "Donnie" Jones which is the same name of Silas Weir Mitchell's character in My Name Is Earl (2005).
This episode officially marked Season 5 as being the deadliest season of Grimm yet, surpassing the 75 total deaths in Season 3.
Duncan Fargo's first name if from the Gaelic Donnchadh, which means "dark warrior," and Donald Jones' first name is from the name Domhnall, which means "ruler of the world."