The final episodes trailer for The Flash was released a couple of days ago along with their respective titles. I thought I'd have a look into what these titles mean and comparing them to the trailer. Spoilers ahead of course.
Episode 19 - Who Is Harrison Wells?
Joe and Cisco head to Starling City to continue their investigation of Dr. Wells. While in town, the duo enlists the help of Captain Lance, and Cisco meets the Black Canary, who asks him for a favor. Meanwhile, back in Central City, Barry races to catch a meta-human named Hannibal Bates who can transform himself into every person he touches – which includes Eddie, Iris, Caitlin and even The Flash.
Turns out this will be the episode that will feature Captain Lance and Laurel and not the previous episode. Why do Joe and Cisco go to Starling? Either Wells has a connection there or Joe just feels Lance is the man for the job. It's likely Joe will find Harrison's corpse that was buried by Eobard Thawne by the looks of the trailer. This means that Tina McGee is in danger because she knew Harrison before the accident and seems aware of how much he has changed. As for Hannibal Bates, this explains so much! The Flash is not fighting himself, but Hannibal. Eddie isn't killing those cops, Hannibal is.
Episode 20 - The Trap
It's a trap! This is probably the episode where Barry finds out who Harrison really is considering that Joe will most likely discover the truth in the previous episode. We're most likely going to get answers in this episode and have Eobard explain everything. Eobard will still have a few tricks up his sleeve and might even trap the team inside STAR labs to kill them. We will also most likely get the long awaited Flash vs Reverse-Flash rematch.
Episode 21 - Grodd Lives
Yes! Finally! He's here! Eobard hatches his plan and releases Grodd out on Central City. By the looks of it, specifically out on Joe. General Eiling seems to be coming back, either under mind control from Grodd or he will team up with Barry to take down the telepathic gorilla monster. I'm telling you now, Grodd is going to be the best part of this show. Just you wait.
Episode 22 - Rogue Air
We do know a bit about this episode. Deathbolt is set to return from the upcoming episode on Arrow he will be in next alongside Arrow/Al Saheem in League Of Assassins attire and Firestorm. We don't know if Arrow will show up in the finale but that sort of feels like cheating. Barry should take down Eobard on his own. Eobard seems to be releasing everyone from the pipeline by the shots we've seen of The Mist, Prism and Weather Wizard. Fingers crossed Pied Piper shows up. We also got a shot of Captain Cold and someone who looks like Heatwave, that would explain why "Rogue" is in the title. Please don't give me that gold gun crap again.
Episode 23 - Fast Enough
That is curious. Apart from the title, we basically know nothing. I couldn't really find any footage that hinted towards being in this episode. Who is fast enough? What are they fast enough for? Let's assume that's Barry who is fast enough. Either he is fast enough to beat Eobard or he is fast enough to travel back through time and save his mother, setting up the events of the second season. If Eobard is fast enough, that would mean he could return to his own time. This is an important episode since Barry will probably beat Eobard and then free his father from prison also paving the way for the second season. Season 1 is going to end with a bang.