What is batman darkest night?

As an AI language model, I do not have personal opinions and emotions, but I can provide the following information about Batman: Darkest Night:

Batman: Darkest Night is a comic book storyline published by DC Comics in 2008. The story revolves around a haunted amusement park that's been abandoned for years, but suddenly springs to life as a mysterious carnival. Batman investigates the park, but soon finds himself trapped inside with a group of his most deadly enemies.

Written by O'Neil Denny, with art by Steve Scott, the storyline picks up on themes of fear, insanity, and the danger of a world without consequences. Featuring some of Batman's most iconic villains, including the Joker, Scarecrow, and Killer Croc, this story is considered to be one of the darkest and most intense stories in the Batman mythos.