This story is a sequel to Sunset's Hearth's Warming

As a crime wave comes to Ponyville, Rainbow Dash meets up with an old friend from her flight school days. However, she learns that certain events have caused him to take on an outfit and lifestyle inspired by the Mysterious Mare Do Well. One of the scary things she learns is that it's all that's keeping him alive. Determined, Rainbow Dash tries to help him, and maybe help put a stop to the crime wave in Ponyville. Will she succeed?

Follows in between MLP FIM Season 6 Episode 12 and Season 6 Episode 13.
Previous Volumes That come before this story:
Novel No 1: Sunset's Redemption
Novel No 2: Sweetie Belle's Big Adventure
Novel No 3: Sunset's Hearth's Warming

(Reason why this is Rated T is for this story gets dark in later chapters)

This story is a sequel to Sweetie Belle's Big Adventure

The holiday; Hearth's Warming is back in Equestria and for the Shimmer family, they get a great surprise in the form of the oldest daughter returning for the holidays. However, Sunset herself will also experience surprises as she and her family meet up with Moon Crest's sister and her family, and deal with the unruly grandmare; Sunbeam Shimmer. One thing is certain, this visit will be more eventful than the first one
(Set Around the Time of Season 6 Episode 8 'A Hearth's Warming Tail', and comes long after Sweetie Belle's Big Adventure')

This story is a sequel to Sunset's Redemption

What began as a normal dull afternoon for Pony Sweetie Belle quickly turned into one of the biggest adventures in this young filly's life. A dark potion, left by a servant of King Sombra, transports the little filly unicorn to the human world where she gets to meet the humans, including one that has the same hair style as her mane, and has the same name as her. In order to get home, she will have to relay on her human friends, but trouble comes up as human Sweetie Belle's sister doesn't listen to her, she has bullying issues with Diamond Tiara, and then there's the madpony trying to use her powers for some dark deed. Not to mention, her human counterpart may not want to give the pony version up. Will Pony Sweetie Belle ever return to Equestria? (Following after Sunset's Redemption/Set in Between Friendship Games and MLP Season 6).

This story is a sequel to Sunset's New Look

For the first time since Sunset stole Princess Twilight's crown, the former student of Princess Celestia returns to Equestria to try to make amends with her family and her old friends from Canterlot. However, she is unaware of plots to get back at her and betrayals, plus there are surprises that will shock her and change her life forever. (Set in Between Friendship Games and MLP Season 6)

Following after the events of 'Rainbow Rocks' and 'Sunset Shimmer's Time to Shine (Novel)' and before the events of 'Friendship Games'. Sunset Shimmer decides one afternoon that it's time to change her look from the evil girl who once ruled Canterlot High School with an Iron Fist, sort to speak, to the girl who's seeking redemption and hoping to make new friends in the future.