'Game of Thrones' Season 4: The 'Night's King' and 'White Walkers' [SPOILERS, VIDEO]

George R. R. Martin, directors D. B. Weiss and David Benioff may have pulled off another shocker to the hit fantasy television series "Game of Thrones." The appearance of the alleged "Night's King" had fans, viewers and book readers buzzing over what could be a TV spoiler to the books—which usually happens the other way around.

Fans and book readers can now believe in the existence of the Night's King. News has been circling the Internet that in HBO Web site's official episode description, the horned "White Walker" in GOT's 4x4 closing scene was named the Night's King. HBO immediately retracted the "mistake" in its Web page and renamed it with "a White Walker." The screenshot of the original synopsis, taken by a Reddit user, can be found here.

Long time readers of the book "A Song of Ice and Fire" find this issue a big deal because the Night's King's actual existence has never been revealed in the existing books. The Night's King has only been told in legends and stories known among the free folk and beyond the Wall. According to fans, the crowned White Walker being already introduced in the show could be one of the biggest spoilers for the remaining unwritten books.

There had been information about the Night's King in "The Histories & Lore: The History of the Night's Watch." In the books, the Night's King was a former Lord Commander of the Night's Watch until he fell in love with a woman described as having qualities of a White Walker. The legend of the Night's King was said to have happened during the "Age of Heroes." This is when accounts of the "First Men" (believed to be ancestors of the Northerners) were first told and how they joined forces with the "Children of the Forest" to drive back the "Others" or the White Walkers to the "Land of Always Winter" (Northern end beyond the Wall).

In the book, the Others' origins date back the same time in history of the First Men and the Children of the Forest. Before the Others came to view, the First Men and the Children of the Forest went through an extensive conflict that lasted for thousands of years. Eventually, the two groups made peace and had been in harmony afterwards. Then, the Others started to show up from the farther cold Northern mountains to take over the peaceful dry lands and the rest of ancient Westeros. The Others were stopped by the First Men and was never heard of again. Fast forward to "GOT's" modern days, they are now plotting to start a war in the perfectly timed winter, or better known as the "Long Night."

It is a meaningful reference to the Starks words "Winter is coming."

(Credit: YouTube/Cog Incorparated)