True Blood New Blood Finale Sarah Newlin's blood served as a new business venture for Eric in the "True Blood" series finale. Photo: HBO

“True Blood” met the true death on Sunday, Aug. 24. The hit HBO series ended its seven-year run with “Thank You,” the 10th episode in its seventh and final season. With a seriously devoted fan base, the supernatural drama went out with a little Easter egg that only real “Truebies” would catch – a cameo from Charlaine Harris, the author of the “The Southern Vampire Mysteries” books.

[WARNING: SPOILERS AHEAD! Do NOT continue reading unless you watched the series finale of “True Blood.”]

The 62-year-old author, who was born and raised in Mississippi, published her first novel in “The Southern Vampire Mysteries” series – or “Sookie Stackhouse Novels” – in 2001. The books, which followed waitress and telepath Sookie Stackhouse in her hometown of Bon Temps, served as the basis for the HBO series, which took on the name “True Blood.”

Charlaine Harris made an appearance in the final few moments of the series finale. After Sookie said her goodbye to Bill and assisted in killing him, “True Blood” jumped “about a year” ahead. In that time span, Eric and Pam had developed “New Blood,” the cure to Hep-V,” as their own product. The maker and progeny were filming an infomercial for their beverage when the cameras panned to a behind-the-scenes shot of the commercial set. Working the teleprompter that Pam was reading off of was none other than the Charlaine Harris, the woman behind the whole “True Blood” world.

End credits listed Harris’s role, which was non-talking, as an “infomercial sound mixer.” Did you catch Charlaine Harris in Season 7 episode 10? Send a tweet to @AmandaTVScoop and check out a screenshot below:

True Blood Charlaine Harris Charlaine Harris, the author of the "Sookie Stackhouse" series, made an appearance in the "True Blood" series finale as an infomercial sound mixer. Photo: HBO/ Screenshot