Boyle mentions that his cousin Susan didn't know she could sing until her 40s. This hints that his cousin is Susan Boyle who rose to fame as a runner up of Britain's Got Talent (2007) in 2008 when she was 48.
The exterior of Gina's apartment was shot in Dublin, Ireland. The red light stands from the Bord Gais Energy Theatre are visible.
One of the lowest rated episodes of the show.
The episode title refers to The Lord of the Rings: Return of the King (2003). The previous episode featured Sean Astin, who plays Samwise Gamgee in the Lord of the Rings trilogy.