It follows the adventures of Zoey Redbird, a 16-year-old girl who is "marked", becomes a fledgling vampyre and is required to attend the House of Night boarding school in Tulsa, Oklahoma.
Kristin Cast said that these moral dilemmas were included because "those are issues teenagers deal with... We're not afraid to discuss things that are actually happening.
Fledglings who do survive the Change into adulthood are physically stronger than most adult humans, with accelerated reflexes, enhanced dexterity, a heavily extended lifespan, and heightened senses, including night vision.
The religious setting of the series gives it a strong moral perspective,[12] as it is often enforced that Nyx gives vampyres and humans free will.
[13] Throughout the series, Zoey faces difficult decisions and commonly questions whether or not she has made the right choices, with one character dying as a result of her actions in Tempted.
[14] In Burned, a Manichaen view of the Universe is presented, in which Good battles Evil, and characters must choose which side to be on, with the black and white bulls, known as Light and Darkness respectively, introduced as representatives of these forces.
According to Scottish tradition, Sgiach (usually spelled Sgathach) was a princess many centuries ago, who ran the best warrior training school in Scotland.
[30] The series has received generally good reviews, reaching 5th in the New York Times Children's Bestsellers list.
[31] The sixth novel in the series, Tempted, went on sale in October, 2009 with a first printing of a million copies,[35] entered the USA Today bestseller list that week at #1.
[36] In January, 2010, Gezeichnet, a German translation of Marked, reached the #1 spot on the Der Spiegel bestseller list.
[37] The seventh novel, Burned, was released on April 27, 2010,[38] and like Tempted, entered the USA Today bestseller list at #1.
[41] In 2009 Henderson Junior High School in Stephenville, Texas, banned the entire series from its libraries, including the books that had yet to be written for "sexual content and nudity".