- "With my memories restored, I had proof that the family from my dreams, a wife and son that I never knew existed, were real. They were erased from existence by what you did. You were supposed to vanish in your Crisis, Flash, not them! But when you didn't, my future changed. They ceased to exist, and I lost everything. Just like you will now!"
- —Abra Kadabra to The Flash
"Central City Strong" is the fourth episode of the seventh season of , and the one-hundred-thirty-seventh episode overall. It aired on March 23, 2021.
|The Flash must deal with Abra Kadabra’s sudden return to Central City. The villain is back with a vengeance and a score to settle. Meanwhile, Allegra deals with a tricky situation and Caitlin suspects something is off with Frost. Iris is forced to look at a dark moment in her past.|
Barry and Iris are having dinner at their apartment when a small earthquake strikes and Barry receives a message. The rays of the Speed Force continue to appear in Central City. Later, Team Flash volunteer at a construction site. Caitlin tells them about her recurring headaches. Barry as the Flash gives an interview to Arielle Atkins on The Arielle Atkins Hour while helping citizens to rebuild the city after Eva McCulloch's attack.
Abra Kadabra arrives in Central City and kills someone, and then shrinks some sort of object.
Barry faces Abra Kadabra and convinces Abra Kadabra to not explode the entire city, then a Strength Force user attacks both Kadabra and Flash, kills Philippe and injures Barry.
Iris talks to Allegra, and later the citizens about what happened to her during her time in the Mirrorverse. Later, Cisco is using the STAR Labs computers to play Fortnite with Chester when Caitlin and Frost appear as separate entities, shocking Cisco.
- Grant Gustin as Barry Allen/The Flash
- Candice Patton as Iris West-Allen
- Danielle Panabaker as Dr. Caitlin Snow and Frost
- Carlos Valdes as Cisco Ramon/Mecha-Vibe
- Danielle Nicolet as Defense Attorney Cecile Horton
- Kayla Compton as Allegra Garcia
- Brandon McKnight as Chester P. Runk
- Jesse L. Martin as Captain Joe West
Special guest star
- Brad Abramenko as Guard #1
- Jessica Hayles as Arielle Atkins
- Kunal Jaggi as Steven Lee
- Frances Leigh as Alice Lee
- Donny Lucas as Chip Cooper
- Connor Parnall as Volunteer
- Mitra Suri as Amélie
- This is the first episode of the series to neither credit Tom Cavanagh in the main cast nor have him make an appearance in any capacity.
- Abra Kadabra mentions the Chronarch. There are two characters known as Chronarch in the comics. One is the cruel 64th century ruler that exiled Abra Kadabra. He was ultimately defeated when Abra Kadabra teamed up with The Flash. The second is a Legion of Super-Heroes character known as Circadia Senius, an insectoid alien and time theorist in the 30th century. His research of time-travel and time-manipulation theory makes him the perfect director (or Chronarch) for the Time Institute.
- Similar to Thawne (still posing as Dr. Wells) in "", the Flash publicly admits to failing Central City on a news broadcast.
- Abra Kadabra's past was affected by Crisis.
- It's confirmed by Abra that Cisco is known as Mecha-Vibe after using technology to return to hero duties.
- Abra mentions that sometime down the line, Barry will become obsessed with the future for some unknown reason. Though it may likely have to do with Godspeed, who is a confirmed villain this season; and has been sending copycats of himself into the past.
- Cisco confirms there is literally no way to cause Crisis to happen again as antimatter cannot reach that scale of destruction with Mobius trapped in a perpetually shrinking state within the Microverse, though a baseball's worth of it can still wipe out a city.
- Caitlin and Frost split into separate beings by unknown means.
- Iris states that she was in the Mirrorverse for three months. She also states that it has been a week since the end of the Mirrorverse attack. This means that the events of Season 7 are still taking place in 2020.
- Caitlin's early complaints about her headache are the early signs of her splitting from Frost.
- This is David Dastmalchian's first physical appearance in the series as Abra Kadabra since his Season 3 debut episode "" almost four years earlier, making him the second cast member to return after a long hiatus, the first being Liam McIntyre (Mark Mardon) since Season 2, who returned in Season 5, 2½ years later.
- Much like back in "", Barry again does not disguise his voice by vibrating his vocal chords when giving a public statement on the news.
- Caitlin says Killer Frost still has warrants for her arrest, despite the fact she's been in public as a civilian and hero since the fourth season. However, it's possible she doesn't feel comfortable letting Frost out in public to avoid fans of hers; using an alleged arrest warrant as an excuse.
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