From TVGuide.com: "Supernatural scored 2.9 mil with its helluva finale, up 370 thou."
From Variety.com: "Also in the hour, Fox's "Don't Forget the Lyrics" (2.3/6 in 18-49, 6.7 million viewers overall) and "Supernatural" (1.2/3 in 18-49, 2.9 million viewers overall) were both up week-to-week with their finales."