It has been some time since the events of The Edge of Madness, and Princess Cadence has once again returned to her royal duties. On an otherwise unassuming night at the end of a long journey, an event that will serve as the catalyst for her long-awaited destiny will take place. At stake is everything: her home, her friends, Equestria, the universe itself.
The final part of its series, prepare for an epic tale reaching into the murky heart of the earth itself, revealing everything that has been in motion since the first atoms congealed together, in a peculiar mix of microwaved day-old comedy and fresh-cut adventure, grilled with cilantro.

Entries in this series:

Part 1 - Shadows Watching
Part 2 - The Edge of Madness
Part 3 - Forbidden Deeper

It is highly recommended you read these in order, unless you want to be the kind of pony who wanders into a movie midway through and demands to know what's going on.

Statistics:

24 chapters, average 2686 words per chapter.

Other Notes:
Cover art courtesy of Chicmonster.

If you want to get in contact with the author, email him! saltyjustice AHT derpymail DAHT com. Spam prevention, that.