Princess Twilight Sparkle discovers a centuries-old mystery hidden in the Royal Archives. Her investigation leads through layer after layer of deception and misdirection, setting her hooves on a path that seems to be leading to a mysterious secret. Along the way, she learns that some friendships can be very, very strange.

Book 1 of the Alicorn Adventure series.

AUDIOBOOK by VisualPony
Featured at the Royal Canterlot Library
TV Tropes Page (Courtesy of Sandtalon)
Goodreads Page (Courtesy of Facedeer)
Equestria Daily Page

WARNING: Major spoilers in the comments. Takes place several months after the end of season four. (Not a Da Vinci Code crossover, BTW!)

Do you see a dark tag? No, you don't. Not dark. Well, okay, there are a couple of dark-ish bits, but that's all. Not enough to warrant a tag. Speaking of tags, there really ought to be "Badass Twilight" and "Friendshipping" ones.

Sequels and side-stories (and more) can be found here Offprint and AO3, and a hardbound two-volume set of all that can be ordered from The Ministry of Image.

My editor for the first edition of this story was Gogito, and I can't thank him enough for all the hard work he did. My editor for the revised version was PresentPerfect, and he did a terrific job of getting the story into excellent shape.

When they began to read the ancient book Twilight and Spike only had the slightest of ideas what it could possibly be about. As the illuminated inks revealed to them an image of Princess Celestia locked in combat with a massive dragon and his sons they realized that the song written upon the aged pages was telling of a long forgotten battle...

... and that the Celestia they know and love is capable of things they dare not imagine.

Inspired by the image "By Celestia's Might" by John Joseco.

This story is a sequel to Split Second

Twelve years ago, she broke time. Two alternate timelines exist, each with a different version of Twilight Sparkle. Both versions of her are able to see the other. In this timeline, Sparkle is a Necromancer.

Or rather, she was. Sparkle is dead now, not that she cares. She's got a new body. With Thorn (her undead dragon son) and Cobalt (her apprentice and an assassin for hire) at her side, she's ready to take on the world. Again.

(Spoilers in the comments. Read at your own risk.)

Featured on EQD.
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The Ask Blog

This story is a sequel to Split Second and won't make sense without it.
This story also loosely shares continuity with Lupine Tree. Reading that is not required.

Cover art by Swirling Line.

A recurring nightmare convinces Luna that, since her return, she has never regained her sister's complete trust. And at the forthcoming Festival of the Eclipse, she decides to make amends with a bold gesture.

But Luna's solution causes consequences she never anticipated. Consequences the whole world will feel. Now, Celestia and Luna must set forth on an adventure that will take them even into Tartarus itself, and set everything right before it's too late.

And if they're lucky, they'll rediscover the trust they once had a thousand years ago.

"To him, I was a way to reconcile his duty with his conscience. To me... he was someone to talk to at a time when I had no-one." -- Princess Celestia

Lord Ragnarok, newly crowned King of the dragons, stands upon a hill overlooking the country of Equestria, an army at his command. Princess Celestia is urgently roused from sleep with a dire warning of impending attack. Thus begins a chain of events that would bring together two of the most powerful rulers of the age, and forge the unlikeliest of bonds. One that would bring salvation to one, and solace to the other.

"I won't call him an enemy, and he won't call me a friend. Make of that what you will."

A precursor / companion piece to Eclipse.

This story is a sequel to Sharing the Night

A collection of vignettes which are, on occasion, based on, but not canon to, other stories by Cast-Iron Caryatid.

This story is a sequel to Twilight Sparkle of the Royal Guard

Between castle gossip, professional rivalries, a blooming romance, and a mysterious malefactor still at large, Decurion Twilight Sparkle has a lot on her plate. Hopefully, she'll make a few new friends as she moves towards the destiny she's chosen for herself.

As per usual, big thanks to Magello for the rad cover art!

This story is a sequel to The Book of Water: The Marriage of the Slave King

The Slave King, the Lord of Earth, was once one of the most powerful deities on the Pantheon. Feared and respected by his peers and enemies alike, he had it all. But then disaster struck, and he was forced to make an unwanted choice. Now he's married to a woman he never loved, bedridden and crippled by some unseen assassin, friendless and vulnerable, buffeted from every side by traitor and enemy alike, and entangled in an endless web of lies and deceit.

Princess Luna, the Beautiful, Lady of Night, was once beloved and desired by all. Once, many sought after her to behold her loveliness and share her wisdom. But now, few seek an audience at her throne in Londwhinium, and even fewer still seem to appreciate her nights. A voice whispers to her, tempting her, taunting her, berating her. She thought marriage would end her loneliness, and bring joy to her desolate heart. She was wrong, she's still unhappy, and the voice refuses to remain silent.

These two souls, bound together by chance and circumstance, each seeking and never finding. Will these two ever find peace, and more importantly each other? Or will they be driven apart, to wander lost and alone in the raging heart of winter?

Part two, of books two of four, of the Slave King Saga
Book one can be found here: The Great Slave King
Part one can be found here: The Book of Water: The Marriage of the Slave King
And if you want something a little bit different try: Equestrian Tales Told by Tavernlight

TV Tropes Page: The Great Slave King: Special thanks goes to gentlereader Abstract Indigo

This story is a sequel to Culling of the Hives

It's been twelve years since Twilight awakened as a changeling. With Phoenix Roost's focus on economic and population growth, the hive has grown strong.

The rest of the changeling hives have been ravaged by war for years with Twilight's brood remaining aloof. Sphinx psyker immigrants have dispersed throughout not only Equestria but as far as the Griffin and Minotaur nations, eager for a new life away from the paranoia of their homeland.

Yet for all of Twilight's desire for leave the rest of the queens to their wars, the Home Guard's proclamation will force Twilight to return to the jungle of her rebirth.

Real cover art pending.

As always, big thanks to Boldish42 and A Bitter Pill for editing.

Derpy was just trying to make a sandwich. Vinyl was there too.

Now the world is ending.

Really, it's all their fault.

A stylistic tribute to Terry Pratchett.

Russian translation by Repitter.

Proofread by MrNumbers, Octavia Harmony, and TheMaskedferret.