Disclaimer: I do not own DC Comics or the CW TV shows Arrow, The Flash, Legends of Tomorrow or any other characters or elements pertaining to the mentioned franchises.

Oliver, Laurel, Thea, Mia, Sara, Barry, Iris, Rachel and Kara were in the pipeline as Prometheus, inside his cell took off his mask and everyone gasped as the assassin revealed his face… the face of Tommy Merlyn as everyone gasped in shock.

Rachel especially was horrified as she covered her mouth. "Oh, my God…"

"It can't be…" Sara murmured.

"Not again…" Laurel whispered.

"How…" Thea gasped.

"Tommy…" Oliver said lowly.

"Tommy Merlyn?" Barry asked. "I thought you said he died when Imperial Ring blew up two months ago."

"It's not possible…" Rachel stepped back before running away, tears filling her eyes as her worst fears seemed to have come true. "It can't be…"

"We're gonna need a moment alone." Oliver ordered as Laurel followed Rachel.

"Wait, I thought that Tommy died when Imperial Ring went down." Caitlin said. "We were all there." She turned to Sara. "We saw him stop Cain, the Four Horsemen and the Beast as the building exploded."

"It's not the first time Tommy came back from the dead after a building fell down on him." Sara sighed. "I can't believe he's back to being Prometheus." She said as her worst fears were dredging up.

"There were too many bodies to find out if Tommy died." Henry reminded. "The real question is, why would Tommy be Prometheus again and trying to kill us? I thought he left that part of his life behind."

"Maybe he was brainwashed again." Bruce tried.

"Or he's a crony." Mick tried.

"An anachronism." Stein corrected.

"That's what I said." Mick said.

"A what?" Sara scowled.

"Lately, we and Rip have been dealing with anachronisms." Stein said. "You haven't been around for a while, Sara, someone's been displacing people and things throughout time."

"OK but why would Nazis from 1945 want to crash my wedding?" Iris asked.

"Crab legs. They were delicious." Mick noted.

"Well, Iris has a point though." Alex stepped up. "Why a wedding?"

"If they were out of time, why not target military or law enforcement?" Barbara asked.

"And why would Tommy be working with the Nazis?" Thea whispered. "I can't see how it would make sense."

"Unless it's not an anachronism." Caitlin said.

"Visitors from another Earth?" Barry deduced.

"Whoa, there are more than one?" Jax scowled.

"I'm from Earth-2." Mia said. "And so is Laurel's doppelganger. Black Siren and Dr. Wells."

"And I'm from Earth-38." Kara added. "There are infinite Earths existing the multiverse, actually."

"Though I'm hard pressed to think of one where Nazis are ascendant." Stein muttered.

"I can." Harry said grimly before turning to Mia. "And I'm sure that Zoom and your Malcolm Merlyn might have mentioned it at one point."

Mia turned to Harry, confused before her eyes widened in realization. "Oh, my God…"

Harry nodded. "There is one Earth, where Nazis are dominant superpower."

"Earth-X." Mia said. "I remember that Lau… Black Siren and my Dad used to hear stories from Talia and Zoom about that place. No one with enough common sense would ever go there, since it's literal Hell on Earth."

Harry pulled out series of footages on screen as everyone watched the Nazis on conquest. "It doesn't have a designation because it's a place so awful, so horrific, no sane person would ever travel there. It's basically our Earth. Same history, same timeline, with one crucial and critical difference."

"So, let me hypothesize." Stein said, already suspecting how Nazis came to rule the entire world. "The Nazis developed the atomic bomb before the United States did and they were more than happy to use it."

"Yes." Harry nodded. "The Nazis won the war and New York, London, Paris, Moscow, all obliterated. The SS set up outposts not only all throughout Europe but also throughout the Americas, and Hitler continued his brutal reign aided by prime ministers and presidents sympathetic to him until his death in 1994."

"And now they want to rule another Earth in addition." Bruce sighed.

"Oh, my God…" Mia murmured.

"This is so sick…" Helena groaned.

"We have to find them." Kara insisted. "I mean, do you think they're using the breach to hop between worlds?"

"That or they're operating from a staging area somewhere in Central City or close by." Alex agreed.

"Well, good thing we have a metric ton of smart people in this building… and Rory." He turned to Mick. "Let's go to work on finding our new friends from Earth-X."

Rachel was in corridor, tears in her eyes as she was sobbing and covering her mouth before Laurel approached her. "Hey." She held Rachel's arms. "Rachel. Look at me."

"Not again…"

"Look at me." Laurel insisted as Rachel turned to her, cheeks wet and tears in her eyes. "It's not him."

"That mask… that face… I lied to him and now he…"

"It's. Not. Him." Laurel pressed. "Our Tommy, your Tommy died two months ago, remember? And you know that there are other Earths." Rachel nodded, realization dawning onto her as Laurel accompanied her. "I know this is hard but I need you to stay strong."

"Earth-X." Oliver said as he talked to Tommy in his cell.

"That's right." Tommy nodded. "And I'm dead on this Earth."

"This Earth…" Oliver nodded as Tommy smiled.

"I'd almost prefer that. I was born into the Reich." Tommy explained. "The whole world is the Fatherland. We don't have elementary schools and summer camps. We have youth groups, military training… we all grow up without a choice."

Laurel and Rachel, who found it hard to watch her former lover in the outfit he had hated as Oliver kept on talking with Tommy. "You have a choice now. You can tell me where to find the others from Earth-X."

"On my Earth, you are my best friend." Tommy said before glancing to Rachel and Laurel briefly. "I would die for you."

"I would have died for you." Oliver replied.

"Would have?" Tommy repeated.

"You sacrificed yourself for us. Twice." Laurel said. "We lost you twice. And each time…" She paused, the grief catching up. "You tried to save the people you love. The woman you love." In that moment, Tommy's face twitched as Rachel kept on looking at him with her measuring stare as she turned to Rachel. "It was like losing a limb."

"You weren't just my best friend." Oliver added. "You… you were my brother… and despite our disagreements…. Despite how much you may have envied me… in the end, you saved us. Gave up your own life twice to save the people you care about."

"And we were there." Rachel said. "No matter how much jealous you were at Oliver… or how much angry you may have been at me for lying to you… there was still some light in you. Deep down you were a good person."

"And we believe that you can still be." Oliver said.

"No, you don't understand." Tommy protested fearfully. "If I talk, if I break, the Fuehrer will kill my father. He'll kill my family, everyone that I love."

"We won't let that happen." Laurel assured him. "We will stop him."

Tommy leaned onto the glass. "Do you believe you can do that?"

And that's when Rachel heard that undertone in Tommy's voice before she held Oliver's arm as he was about to reply. "You know, for a moment, you had me fooled. Until you looked at Laurel." She narrowed her eyes as Tommy's face twitched in anger before he composed himself. "And there it is again. The anger and jealousy in your eyes. You're good, I'll give you that. For a moment, I really believed that you were like my Tommy. That we could reach you. But you're just like Richard was. My ex-husband. A manipulator. A liar. A murderer. A psychopath." Tommy narrowed his eyes at Rachel. "You sell that "frightened boy" act well, I must admit but I see right through you. We were never gonna reach you, were we?" She challenged.

Tommy stared at her for a long moment before he laughed viciously like a maniac. "You know, I studied my doppelganger's history and I can see what he saw in you. And I must say, he was soft and weak, for not killing you for lying to him and giving you another chance. I would have carved your heart out with no second thoughts."

Rachel paled at the thought but she reminded herself that it was not her Tommy as he turned to Oliver and Laurel. "And you two are really special kinds of idiots." He said as he grinned at Oliver and Laurel, amused with a fierce glare. "Your naivete would be charming, if your weakness wasn't so pathetic. Is that how it is on your planet? Everybody swayed by sentiment? Is everyone here really so weak?" He mocked as he bit his lip. "The Reich will change that. The weak will be eliminated, your entire world will be enslaved but you…" Tommy pointed at Oliver. "You won't be around to witness it. He is going to feel your skull crack under the weight of his boot. Everyone you care about, everyone you love, they're going to die badly…" Oliver, Laurel and Rachel were shocked by Tommy's ruthlessness but they kept reminding themselves that it was not him but still... it felt like if they were looking at Prometheus before they could reach him. "In ways that would give even monsters nightmares."

Tommy chuckled as he dropped his mask. "I really wish that I could live to see it." He reached inside his upper jaw to pull out a tooth as Oliver, Laurel and Rachel realized what was he about to do as they widened their eyes in shock.

"No!"

"Tommy, don't!"

Tommy swallowed the cyanide capsule as the foam started to form in his mouth. Oliver opened the door as Rachel covered her mouth as the man, who looked like her former lover, just committed suicide and Laurel hugged her as she broke down in tears, while Tommy collapsed on the floor, dead.

Author's Note:

So, what do you guys think about it?

Please review and let me know if you are enjoying this so far.