After visiting the past in It's About Time, Twilight spends some quality time with Princess Celestia before returning to Ponyville. She then falls into a coma and wakes up where no living pony would ever wish to be, and things only get more complicated when Celestia gets an unexpected visit from herself. Featuring Twilight, Celestia, Luna, The Underworld, and some other alicorn etc.

What would happen if some events happened sooner while others never happened? and others yet that should never have happened happened anyways? Grimdark
TwiLuna

After Nightmare Night, Luna invites Twilight to tea, and they start spending more time together. Princess Celestia teases Luna about it sometimes.

What if Rainbow Dash had been present when Discord gave the Mane Cast their first shot at him? How could things have gone different? How could this have changed things?How could this have changed Twilight?

Update Schedule Below the Break.
Now with the super editor FredMSloniker!
Now with a wonderful cover image by Conicer!
Also - Awesome Fanart - http://nyuuchandiannepie.deviantart.com/art/Discolight-273099814

Update Plans
December 11 - Edited versions of first four chapters
December 14 - Chapter 5
Future updates at least 1 time per week.
Total Planned Chapters - 12

Twilight Sparkle and her fellow Elements of Harmony have faced down supernatural foes of the highest order, but sometimes the deadliest danger can come from places one would least expect. As Twilight is forced to bear a devastating secret, her efforts to keep the Elements together may well tear them all apart.
The plotline of the thrilling Pony Psychology Series continues with an exploration of deception, despair and Discord.
This series takes place between Season Two and Season Three.
Secrets and Lies shares the Pony Psychology Series TVTropes page.

One night starless night Twilight attempts to force the stars out using an ancient spell. Equestria now has to deal with another alicorn. Luna is furious, Cadence is estatic and Celestia is curious? Now Twilight finds herself having to leave to prove herself and settle 'the old lands' ponies lived in before equestria. Well she succeed? How much are her friends willing to give up to support her? Answers well be revealed inside.

Trixie returns to Ponyville seeking to put things right between herself and the townsfolk. But when Twilight receives a letter from the Princess, Trixie gets the chance to live up to her previous boasting. Can she do it alone, or will she need the help of a certain purple unicorn?

Disclaimer: My Little Pony: Friendship Is Magic is copyright Hasbro and was created by Lauren Faust. The Mane 6, the Great and Powerful Trixie, Spike, the Cutie Mark Crusaders, and every other creature featured in canonical episodes are part of that copyright. All ponies not featured in canonical episodes, such as the Great Lapis Lazuli and the Powerful Pyrite, are original characters from the author's imagination. This is a non-profit fan work made in celebration of a great show and the absolutely amazing fandom that follows it.

Trixie, having recently lost all her possessions during a certain Ponyville incident, manages to find a lucky job as a performer for Equestria's most anticipated holiday. While there, she discovers something precious to her survived her caravan's destruction... and is currently being held by a familiar face.

Now, Trixie's determined to retrieve what's rightfully hers. But little does she know that her attempts will set off a chain of events, leading to what could either be the greatest or the worst thing that's ever happened to her.

(Image belongs to KP-ShadowSquirrel)

A pony can choose to do many things in his or her life before he or she dies: he could be a farmer, bringing in produce and commerce to the kingdom, or she could be a rebel, fighting to further her cause. Death visits everypony, however: the farmer hopes to leave his farm in capable hooves before he passes, and the rebel hopes to have finished the fight for whatever cause she was fighting for before her time comes.

Sometimes, death likes to come calling early: the farmer taken before his prime provides no additional produce; and the rebel becomes a martyr, causing others to fight in her place.

Sometimes, rather than kill a pony, it is better to leave him or her broken.

A nightmare has Luna worring that her past might be catching up to her. A secret that could possibly destroy the fragile mind of a certian purple unicorn and destroy the trust of her sister might have to be brought to light. But is she ready to do that?