Sherlock meets The Flash and Arrow

Cisco

Where did I leave the device? I think it was somewhere in the Cosmic Treadmill room, which is why I'm in here.

I can see the back of Caitlin's head through the open door, but she hasn't seen me. I try to keep my eyes away from the Cortex. It's like I have a little evil devil in my head, and every time I look at something, my little demon starts talking.

That table is where you helped Sherlock. Where you donated blood to him.

Which was the right thing to do.

Going into the Cosmic Treadmill room was a bad idea. There's so much material in here.

And that room is where Sherlock had the gall to spy on you. That was your private conversation.

Like I spied on Barry. I'm at least as bad Sherlock.

He let his best friend mourn him for two years.

Damn. My inner demon is good at this. I suppose it is a variation of me, so it knows someone else suffering bothers me a hundred times more than my own suffering. Sensing its advantage, my demon pushes harder.

And he beat up Barry.

My vision flickers red. I don't see the device anywhere. This was a bad idea. I can't think without remembering Sherlock in the Cortex. I lose to my demon, and our thoughts combine into one.

I'll kill him. Slowly. Painfully.

I snatch Reverb's goggles and race out of the Cortex to go find Sherlock.

John

Of course Sherlock had to be the hero. The one to fight Cisco.

I'm standing on a building, looking down at Sherlock. From here, Sherlock looks so small and vulnerable.

Cisco opens a breach and steps out. Immediately, I realize that something's different.

Everyone has a way they hold themselves when they're fighting. It reflects how willing they are to hurt their opponent. Cisco fought with the look of a person who wouldn't hurt his opponent. Sherlock fights his friends with the look of someone who will hurt you, but not permanently. That's the way he looks now. But now Cisco looks like Sherlock does when he's fighting seriously.

Ready and willing to kill.

Cisco

The edges of my vision fade to red.

Sherlock.

I may have almost no fighting experience, but I have lots of second-hand experience from watching Barry and Oliver fight.

Sherlock looks almost casual, but I can tell that he's ready for me. Doesn't matter. I'm the one with the superpowers. And I know how to use them.

I settle Reverb's goggles over my eyes and I put up all my defenses in a matter of seconds. Vibes are still useless because of Sherlock's mind tricks, but I hold one up just in case. I try a new thing, where I create a layer of sound just outside my clothes. If Sherlock's clothes touch me, they'll get vibrated to shreds. The same with his skin, hair, and (theoretically) his muscles and bones. And brain.

Which would result in a very painful death. Like Professor Quirrell's.

Good.