Meena is doubting her abilities, Cecile's power take another boost and the cause behind Iris's time sickness is revealed.
Tropes Featured in this Episode:
- Beam-O-War: Allegra with the Negative Sage Force, which she eventually loses.
- The Bus Came Back: Several
- Bart and Nora make an appearance again when Iris is transported to the future.
- Rosa Dillon returns after Cecile unwillingly absorbed her powers, and she accompanies Cecile to prison to talk to Mona Taylor of the Royal Flush Gang.
- Joan Williams returns, examining Iris's condition in the future.
- Curb Stomp Cushion: Allegra, Chester and Cecile are outmatched against the three Negative Forces, but they do manage to give them a good fight briefly and stall them long enough for Meena to empower Eobard.
- Darkest Hour: The Negative Forces trick Barry into killing Iris and thus also the real Forces and Thawne takes over his heroic version's body, killing the latter and horrifying Meena, with his speed fully restored.
- Department of Redundancy Department: Rosa states that she "got a mental image of [Cecile] in her mind." Where else would one get a mental image?
- Dramatic Irony: Eobard Thawne finally teams up with his hero... and has no memories of idolizing him.
- Entertainingly Wrong: Before discovering that the Negative Forces exist, Barry assumes Deon has been corrupted by Iris’s time sickness.
- Facial Horror: Cavanagh-Thawne gets reborn by literally ripping Letscher-Thawne's face off, revealing his own, cowled head behind it.
- He's Back!: After he is initially killed via Rapid Aging, Cavanagh-Thawne comes back, fully powered, after Iris is killed and he is able to take over the body of Letscher-Thawne.
- Internal Reveal:
- Barry reveals his identity to Meena.
- Joe learns from Cecile that the latter has been patrolling.
- Manipulative Bastard: The three Negative Forces trick Barry into powering up, then Negative-Deon teleports Iris right into the way of his lightning, killing her and the real Forces.
- Mythology Gag: Wells!Thawne emerging from Eobard ripping off his face is a reference to issue 26 of the 2016 Flash series, which had a cover depicting the same thing happening to Barry.
- New Powers as the Plot Demands:
- Apparently, Cecile can now steal the powers of other psychics as well.
- Barry coaches Meena through sharing her powers with someone else, when previously there was no hint that speedster powers could be shared except under very specific circumstances.
- No Body Left Behind: Iris's body dissipates, with her essence going into Letscher-Thawne and reviving Cavanagh-Thawne.
- Offscreen Moment of Awesome: Future!Barry and Future!Jay are offworld doing something.
- Out of Focus: Caitlin and Mark appear in only a single, short scene, still trying to revive Frost.
- Power Parasite: Cecile's powers have evolved to such a level that she is able to absorb the powers of every psychic meta she comes in contact with (Rosa Dillon and Mona Taylor so far).
- Rapid Aging: How Negative-Deon kills Cavanagh-Thawne on Lian Yu.
- The Reveal: Deon hasn't been pulling a Face–Heel Turn — the Deon that Barry encountered during the last few episodes is really the Negative Still Force. And this episode, he is also bringing the Negative Strength Force and the Negative Sage Force with him. They are behind Iris's time sickness, which they used to weaken the real Forces.
- Some Kind of Force Field:
- Iris gets prevented from being transported out of the future by a green energy field from the Negative Speed Force.
- Chester briefly traps the Negative Strength Force in one.
- Sore Loser: Bart, when Nora beats him in a video game.
- Super-Empowering: Meena is able to share her powers with her Eobard, turning the latter into a heroic speedster as well.
- Wham Line: Iris realizing that Thawne was never supposed to be the sacrifice — she was. And then she gets teleported into the way of Barry's lightning.
- You Are Better Than You Think You Are: Both Barry and Eobard encourage Meena after she is being too hard on herself for not improving fast enough.
