Season 9 Episode 21 Anticipation Thread Marimo!!Spike No.36830907
Episode 21 of the final season is called Daring Doubt.
>When another author releases his own version of the events in AK Yearling's Daring Do books, Rainbow Dash is furious, while Fluttershy is curious to know the truth.
The episode airs on Saturday, September 21st at 11:30 AM EST.