I know I've been writing a lot about Caitlin Snow/Killer Frost since "Unforgivable", but that's only because I love exploring her dark potential. While I loved how the TV show is handling Killer Frost, I'm slightly disappointed that she's always the henchwoman to villains like Savitar and Amunet Black. I wanted to see her be her own villain.

I was supposed to be writing the Darkseid sequel right now, but I realized that there are some plot points that I want to add and explore to my "Unforgivable" universe and this spin-off is my way of doing that.

Leave a review after reading, please. Feedback is always appreciated.

I'd like to thank Master Skywalker 121, Dark Suspense, godspeed 251, Steve993, NeoTyson, SwaggyB, DragonEmperor999, TheLifeStruggleIsREAL, XWF1000 (sort of), and lupo95gxd for reviewing the final chapter of "Unbelievable".

Before we get started, I'd like to point out a few things:

- If you've read Unbelievable, then you know Barry is in the Speed Force. He will not be returning in this story, because, well, what's the point of this being referred to as a Killer Frost spin-off if it's starring Barry Allen/The Flash?

- I'm sure some of you are excited that I brought Bart Allen to my universe, but don't expect much. He's just a baby at this point. To tell you the truth, I'm planning a sequel set in the year 2046 starring the descendants of our favorite Arrowverse characters, but that will come after the Darkseid sequel. Until then, just enjoy some cute moments between Caitlin and her baby boy (who just happens to Barry's). Don't worry, Barry and Bart will meet one day. Just not in this story.

- Caitlin is going to be single in this story. I've balanced her character development and romantic side stories in the Unforgivable and Unbelievable, but this time, it will focus mainly on her as a character, not as a love interest. Oh, and I'm gonna refer to her as Crystal from now on, because, well, I just want to.

In an abandoned A.R.G.U.S. black site outside of Gotham, the one called Caitlin Snow, known to the world currently as Crystal Frost, secretly a metahuman once known as Killer Frost, entered the warehouse and walked towards an old wooden table under the only functioning light bulb in the entire place. In her arms, Crystal holds a baby boy, whom she named after his father, Bartholomew Henry Allen. Instead of calling her son, "Barry," she calls him "Bart." The reason why would amuse anyone who would care to listen.

She looks down at her son and playfully pokes him on the nose, causing him to giggle. The sight of her son giggling brought a smile to her face. Who would've thought that someone so small and adorable can melt the heart of someone known as a cold-blooded killer?

"Okay, little one. Mommy has work to do so enjoy your bottle and, please, try to be quiet," said Crystal.

After feeding Bart with a bottle of milk, Crystal turns her attention to more serious matters. On the table are case files and a recorder. Suddenly, she can feel her free hand becoming colder, signalling that she's losing control of her powers. Instead of unleashing her fury to calm herself, like she usually does, she closes her eyes and takes deep breaths.

After regaining control of her powers, Crystal can see a confused look on Bart's face as he continues sucking on his bottle. Crystal noticed that a part of her hair turned white. She has yet to show the baby who she really is and what she can do, preferring to keep him out of the dangerous part of her life. After giving Bart a little shake, she picks up the recorder and turns it on.

"Journal Entry 52. This is, as always and at the moment, Crystal Frost. I am facing a crisis that, I will admit, is too much for me to tackle alone. Once upon a time, I formed a team to aid me in my personal vendetta some time ago, and considering what is at stake, I may need to do it again. But this team will require those who prefer to work in the shadows. What I'm facing, it can't be handled by the likes of Green Arrow or Supergirl, not because they're not qualified but because this mission requires both efficiency and confidentiality."

Crystal opens a couple of files and reads them.


"Slade Wilson, a.k.a. Deathstroke. Former A.S.I.S. operative. Former mercenary. Former husband of Adeline Kane. Father of Joe and Grant Wilson. Specializes in hand-to-hand combat, swordsmanship, and artillery. He currently travels the world with one Helena Bertinelli, a.k.a. Huntress. Son of deceased crime lord Frank Bertinelli. Convicted of mass murder. Sent to serve a sentence at Iron Heights. Escaped. I must admit, those two do make one badass couple."


Somewhere in Bludhaven, Deathstroke and Huntress are currently engaged in a fight with a crime gang in a warehouse. Both of them were hiding behind a pile of crates to protect themselves from gunfire. With correct timing, they peer around the corners to take their shots. Deathstroke used his guns while Huntress used her crossbow pistol.

"This isn't exactly how I wanted to spend our second date," said Huntress.

"If memory serves, you were the one who owed them money," said Deathstroke.

"Uh, they overreacted," said Huntress.

"Let's discuss this once we're out of this mess," said Deathstroke. "Shoot the lights."

Huntress did as Deathstroke said and shot every light bulb in the room, blinding the gunmen. The two masked individuals come out form behind the pile and started advancing towards the gunmen, using the darkness to their advantage. Huntress puts arrows in three thugs, kicks one towards a window, and slams one's head on a crate. Deathstroke uses his sword to kill all the remaining armed men, as well as using his fists when up-close combat was required.

The last man standing had a grenade launcher. He was about to fire, until Huntress fired a crossbow into the firing hole.

"Slade!" yelled Huntress.

Huntress and Deathstroke jump out of a window as the grenade launcher exploded, destroying the man carrying it and incinerating every body inside the warehouse. The two vigilantes were only blown away by the blast, but they crashed to the ground almost unscathed.

"Next time we go on a road trip, I get to decide our destination," said Deathstroke, taking off his mask.

"Oh, now you're getting cold feet?" asked Huntress.

"Do I have to remind you about the Bahamas?" replied Deathstroke.

Huntress rips off her mask so Deathstroke can see how antagonized she was by his rude tone.

"Hey, you started that fight," reminded Huntress.

"Only because the people who came after us were after you," said Deathstroke.

The two quit bickering when Huntress' phone beeped. An anonymous number gave her an address, a date, and a message: "I know who you are."


"Tatsu Yamashiro, a.k.a. Katana. Japanese. Widow. Survivor of the chemical outbreak that occurred in China seven years ago. Currently a member of the Crescent Order. Swordsmanship is matched only by a few."


Tatsu Yamashiro was currently meditating in her quarters. Sensing presence near her, she immediately stands up and draws her sword, holding its point close to the throat of what turns out to be a member of the order. He holds a scroll that he wished to deliver to her. Tatsu puts her sword back in her sabbath as she takes the scroll from her fellow warrior. She unrolls it and reads the message, which was written in Japanese. In English, it says:

"Gotham. 246 Blood Street. Don't tell Oliver Queen. You have two days to make your choice. If you waste all that time, I'll come for you myself."


"Leonard Snart, a.k.a. Captain Cold. Former criminal. Member of the now retired Legends. Husband of Sara Lance, the White Canary. Cold is his name, cryogenics is his game. Possesses a gadget called the Cold Gun, a weapon that can stop even The Flash."


Leonard Snart was living a quiet life in Ivy Town with his wife, Sara Lance, who was five months pregnant. If you would ask Leonard, he found the domestic life boring. Luckily, so did Sara. But they both chose to hang up their suits to live a life where they can raise a child in peace, no matter how boring their current life was. Sure, Oliver and Laurel are at peace with balancing their vigilante life, political life, and parenting life, but Leonard and Sara chose to take a different path in their marriage. Although, they were considering getting back to their vigilantism life some time after the baby was out. Surely, they can find a sitter, right?

It was movie night for the married couple. Tonight, they were watching Star Wars: Episode V - The Empire Strikes Back. Sara sat down leaning against her husband, who kept his hand on her stomach, as if he was petting the baby. They were already at the part where Leia confesses her love for Han, who replies with a simple "I know" before being frozen in carbonite.

"Poor Han," said Sara.

"But we know how it turns out," said Leonard.

"Still, at that point, you'd think their love is doomed," said Sara. "Reminds me of the times when our love was doomed."

"You mean me dying and then betraying you for the Legion?" questioned Leonard.

"But I always knew we'd pull through," said Sara.

Sara and Leonard engage in a tender kissing session, only to be interrupted by the ringing of the phone.

"I'll get it," said Leonard, kissing Sara one more time before getting up.

Leonard answers the phone. Once he heard whose voice on the other end belongs to, a frown shows up on his face. Sara notices this and becomes worried as she pauses the movie. Leonard hangs up and sits back down next to his wife.

"What happened?" asked Sara.

"I just got a call from an old friend," said Leonard. "Someone needs Captain Cold to get back out there."

"And you didn't bother to mention that you're married?" asked Sara.

"This person already knew that," said Leonard.

"You're being awfully clandestine," said Sara.

"Trust me. You know who it was, you'd freak out," said Leonard. "Apparently, the job requires superheroing from the shadows and it comes with a promise of a reward."

"A lot of money?" asked Sara.

"$1,000,000," answered Leonard.

"You seem tempted," said Sara, reading her husband's face.

"If I do accept it, it's not because I want the money for me. It's because I want it for us," said Leonard. "We've burned a lot of cash on this house, the furniture, and the constant repairs to the damage caused by your mood swings."

Sara smiled in amusement, remembering her emotional breakdowns because of mood swings caused by her pregnancy.

"I think you should take it," said Sara.

"I can't do that," said Leonard. "I'd rob you of a husband and our child of a father."

"You said that you would win that money for us, so go," said Sara. "Believe me, I wish you'd stay out of this, but you did say this job required superheroing, right?"

"Well, a different kind of superheroing, but it still involves saving the world and all that junk," said Leonard.

"The baby and I will be fine, Len," said Sara. "You, you missed being out there, don't you? I wish I can stop you, but I would prefer if you go, only because I want you to show me that you're still the man I love."

Sara grabs Leonard's hand and puts it on her stomach.

"Do it for our child," pleaded Sara.


"John Constantine. Exorcist. Demonologist. A wizard, as a kid would say. Fancies himself a gambling man. Owes a lot of people money, including one Esrin Fortuna. Charming rapscallion with a penchant for dark arts and a basic taste for women, I can see why Oliver Queen trusts him so much."


John Constantine was currently walking down the streets of Opal City, smoking a cigarette and ogling at beautiful women he walks pass by. He stops when he heard a woman being mugged in an alley by a man. As much as he didn't want to get involved, he had to do something.

Constantine snaps his fingers and sends the man flying into a dumpster. He even closed the lid for good measure. The girl looks at him strangely. He just winks at her before walking away. Once again, he stops, only because a voice called out for him.

"Constantine!"

"Oh, what now, Fortuna?" asked Constantine, turning around. "I promise I'd pay you. Just not today."

"Someone left me a message that was intended for you," said Fortuna.

Fortuna takes out a letter and magically raises all of what appears to be shattered pieces of ice out of it. With a wave of her finger, she puts the pieces together to form a message. It says:

"You owe one, Constantine. KF."

"Who's KF?" asked Fortuna.

"Someone I owe a lot of money to," said Constantine, putting emphasis on "a lot."


"Laurel Lance... or to be more specific, Laurel Lance from Earth-2, a.k.a. Black Siren. Developed a supersonic scream from S.T.A.R. Labs' particle accelerator explosion. Sadistic, dirty, and looks that could kill, she's everything I could ever ask for a partner."


In Hub City, Laurel Lance, or Dinah Drake, having accepted an old friend's offer of a new life, if reluctantly, is sitting by herself at a bar, drinking a glass of scotch. One drunk man decided to sit next to her, making eyes at her.

"You waitin' for someone, sweetheart?" asked the guy. "I'm Ron, by that way."

"Well, Ron, if you must know, I don't date married men," said Laurel.

Ron looks at the wedding ring on his finger. He takes it off and puts in his pocket.

"Oh, what the missus doesn't know won't kill her," said Ron, flirtatiously putting an arm around Laurel.

"Well, allow me to give a nice and clear answer," said Laurel.

Outside the bar, Laurel makes out with the man before screaming into his ears, blowing his eardrums and killing him. She abandons the scene before anyone came. She returns to her apartment building to find a message on her door. It says:

"You wanna play, Lance?"


Two days later...

Tatsu arrives at the A.R.G.U.S. black site in Gotham via a motorcycle. She enters the door to find no one. She did, however, hear the sound of a car approaching. A black Lamborghini with a stylish purple hood stopped at the black site. Exiting the vehicle are two individuals she did not recognize. One was a woman with long, straight black hair sporting a black jacket over a purple top. The other was a grown man with an eyepatch and thick facial hair.

"Who are you?" asked Tatsu.

"Who are you?" asked Helena back.

"I came here because someone sent me a message," said Tatsu.

"Funny. We received a message as well," said Slade.

"Maybe we're here for the same reason," said Helena.

"Well, it's always nice to have company."

John Constantine makes his presence known with his usual charming tone. He looks back and forth between Tatsu and Helena and smiles at them flirtatiously.

"Don't even think about it," warned Slade, reaching for his sword just to warn the magician about making a move on Helena.

"Actually, why don't you think about it?"

Laurel shows up out of nowhere, smirking at Helena, as they knew each other. Helena puts a hand on her crossbow pistol just in case a fight breaks out.

"Must we fight, people?"

Leonard Snart, who just happened to be sitting down on a crate the whole time, revealed his presence.

"Lance," greeted Leonard.

"Snart," greeted Laurel.

"I see some of you have history," said Tatsu.

"Shall we go inside?" suggested Leonard.

All six individuals entered the warehouse. It was dark, mostly because every window was shut. One light bulb was functioning and underneath it stood a face that almost all of them recognize. Crystal Frost, her hair glowing white and her lips sparkling blue. She was wearing an icy blue leather jacket zipped halfway up over a black top, black tights with a snowflake symbol on the belt buckle, and black heeled shoes. In her hands, she carried a sleeping baby with brownish red hair.

"Hello, everyone," greeted Crystal. "Let's talk business."

Oh, and before you complain about why Batman is not here, the Gotham thing is just a fun nod. Arrow 6x02 confirmed that Gotham exists on Earth-1, so I thought I might use it, but don't be expecting Bruce Wayne to pop up.