Spoilers are coming!
After Sunday's, April 27, episode of "GoT," HBO's official episode synopsis identified the crowned White Walker that appears at the end of episode as the "Night's King," which is totally fine except there is no Night's King! (At least, not yet ... )
The Night's King is a character that is speculated about in Martin’s “A Song of Ice and Fire” novels, the inspiration for HBO's "GoT," but he doesn't actually exist in the series yet outside of the characters' bedtime stories.
HBO replaced the “Night’s King” reference in the synopsis with “a Walker,” but not before a savvy Reddit user took a screen shot (see below), according to Yahoo Celebrity Canada.
Currently, Martin has released only five books in the fantasy series. If HBO has revealed the existence of a Night's King who is making an army out of babies, it is a major spoiler for the remaining unreleased books and super bad news for whatever White Walker is on diaper duty.
You can watch the alleged Night's King scene below.