All's Wells That Ends Wells

"You've always been The Flash, you always will be, with or without me."

- Harrison Nash Wells to Barry Allen

Synopsis
When an experiment to save Barry's speed backfires, Nash Wells searches for a way to save The Flash and comes up with a dangerous plan. Meanwhile, Iris makes a startling realization inside the Mirrorverse and Cecile faces off with Rosa Dillon.

Main Characters

 * Team Flash
 * Chester P. Runk
 * The Flash (Barry Allen)
 * Joe West
 * Allegra Garcia
 * Cecile Horton
 * Council of Wells
 * Harrison Nash Wells
 * Harry Wells
 * Harrison Sherloque Wells
 * H.R. Wells
 * Harrison Orson Wells
 * Wells the Grey
 * Iris West-Allen

Villains

 * Eva McCulloch
 * Black Hole
 * Joseph Carver
 * Mirror Master (Sam Scudder)
 * Mirror Master (Sam Scudder)
 * Top (Rosa Dillon)
 * King Tut Killer (first appearance; mentioned)
 * Savitar
 * Zoom

Other Characters

 * Meena Dhawan
 * XS (Nora West-Allen)
 * Clark Kent
 * Kamilla Hwang
 * "Barry Allen"
 * Sue Dearbon
 * Ralph Dibny
 * Caitlin Snow
 * Cisco Ramon
 * Gandalf
 * Sam Chalsen
 * Eva McCulloch
 * Lauren Certo
 * David Singh
 * Gideon
 * Maya
 * Carla Tannhauser
 * Detective Dan Gilbert

Teams and Organizations

 * Team Flash
 * S.T.A.R. Labs
 * Black Hole
 * CCPD
 * Big Belly Burger (Mirrorverse)
 * S.T.A.R. Labs (Mirrorverse)
 * McCulloch Technologies (Mirrorverse)
 * CCPN
 * Iron Heights Penitentiary
 * McCulloch Technologies
 * CC Jitters
 * The Central City Citizen
 * The Central City Citizen (Mirrorverse)
 * CC Jitters (Mirrorverse)
 * JV Squad
 * Big Belly Burger
 * ARGUS

Events

 * Mirror Monarch's War
 * Chase of Eva McCulloch
 * Destruction of the Black Hole Supersonic Jet
 * Black Hole Conspiracy
 * Crisis on Infinite Earths

Species

 * Humans
 * Metahumans
 * Reflections
 * Humans (Earth-2)
 * Humans (Earth-13)
 * Humans (Earth-19)
 * Humans (Earth-221)
 * Time Remnants

Objects

 * The Flash Suit
 * Cryo Pod
 * Enlightenment Satellite
 * Eva McCulloch's Suit
 * Mirror Gauntlet
 * Top Suit
 * Artificial Speed Force Machine
 * Fusion Sphere
 * Artificial Speed Force
 * Techno Fanny Pack
 * Gauntlet
 * Organic Receptors in Nuclear Physics
 * Speed Gauge
 * Savitar Armor
 * Particle Magnet
 * Black Hole Supersonic Jet
 * Dark Matter

Locations

 * Earth-Prime
 * Earth
 * United States of America
 * Missouri
 * Central City
 * S.T.A.R. Labs Central City Facility
 * Particle Accelerator
 * 2nd Street & Walczak, 3rd and Certo
 * 119th Street
 * Black Hole Facility
 * Central City Police Precinct
 * McCulloch Labs
 * Englewood
 * Central City Hospital
 * Leawood
 * University Town
 * Petersburg
 * Lawrence Hills
 * Westminister
 * Windsor Heights
 * New Brighton
 * City Centre
 * Police HQ
 * Central Station Mall
 * Trade & Convention Centre
 * Danville
 * Mounds View
 * Richmond Heights
 * Chubbuck
 * Iron Heights Penitentiary
 * CC Jitters
 * E. Matz Street
 * The Bentley Building
 * Infantino Street
 * Badlands
 * Kansas
 * France
 * Paris
 * Mirrorverse
 * Earth
 * United States of America
 * Missouri
 * Central City
 * Big Belly Burger
 * S.T.A.R. Labs Central City Facility
 * McCulloch Labs
 * The Bentley Building
 * Earth-221
 * Earth
 * France
 * Earth-55
 * Earth
 * Earth-1
 * Earth
 * Original Multiverse
 * Big Belly Burger

Trivia

 * This episode was originally airing in Season 6 of . However, the episodes were cancelled due to the 2019-2020 Coronavirus Pandemic. On May 13, 2020, Eric Wallace revealed that 90% of the episode was filmed and will act as the season premiere of Season 7.
 * The intro of this season includes Chester P. Runk and Allegra Garcia, with Ralph Dibny's section removed.
 * The episode features a book written by Sam Chalsen and Lauren Certo, the writers of this episode and many others.

Goofs

 * The coordinates of 2nd Street & Walczak is 27.271186, 106.289781, which places it in China.