What Lies Beneath

MLP Season 8 Episode 22.jpg

What Lies Beneath is the 22nd Season 8 episode of My Little Pony: Friendship is Magic.

This episode last aired on Discovery Family on September 18, 2021 at 10:30 a.m.


The students at Twilight's School of Friendship are cramming for a "History of Magic in Equestria" exam in the school library when they discover a part of the school that no pony else knows about. When they decide to do some exploring, they end up learning much more than they bargained for.

Production timeline

November 1, 2016 An episode titled "Students Sneak Out" was first planned, listed as #818 in the episode order.
November 21, 2016 Episode pushed back to #821.
December 7, 2016 Episode pushed back to #824.
January 6, 2017 Episode moved up to #822.
February 27, 2017 Episode retitled "What Lies Beneath". Premise written by Michael Vogel.
March 13, 2017 Outline written.
March 21, 2017 Beatsheet written.
April 10, 2017 First draft of the script written.
April 21, 2017 Second draft of the script written.
May 1–5, 2017 Final draft written.
May 25, 2017 Script locked polish.
July 5–12, 2017 Voice recording in session.
October 12, 2017 Animatic submitted for review.
March 7, 2018 Client cut of animated episode submitted for review.
April 13, 2018 Musical score added.
May 22, 2018 Final revisions made to the episode.


Main characters
Yona, Smolder, Gallus, Ocellus, Silverstream and Sandbar
Other characters
01 - Twilight Sparkle.png

Twilight Sparkle
04 - Rainbow Dash.png

Rainbow Dash
(dialogue only)
05 - Rarity.png

(dialogue only)
06 - Applejack.png

(dialogue only)

Home media

This episode is only available on Netflix and other digital platforms due to Shout! Factory's 10-year licensing rights having been expired as of 2019.

Community content is available under CC-BY-SA unless otherwise noted.