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
 * Mirror Master (Sam Scudder)
 * Mirror Master (Sam Scudder)
 * Top (Rosa Dillon)
 * King Tut Killer (first appearance; mentioned)
 * King Tut Killer (first appearance; mentioned)

Other Characters

 * Gideon
 * Detective
 * Gideon
 * Detective
 * Gideon
 * Detective
 * Gideon
 * Detective
 * Gideon
 * Detective
 * Gideon
 * Detective
 * Gideon
 * Detective
 * Gideon
 * Detective
 * Detective
 * Detective

Teams and Organizations

 * Team Flash
 * S.T.A.R. Labs
 * Black Hole
 * CCPD
 * McCulloch Technologies
 * McCulloch Technologies
 * McCulloch Technologies
 * McCulloch Technologies
 * McCulloch Technologies
 * McCulloch Technologies

Species

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

Objects

 * The Flash Suit
 * Eva McCulloch's Suit
 * Mirror Gauntlet
 * Top Suit
 * Artificial Speed Force Machine
 * Artificial Speed Force
 * Techno Fanny Pack
 * Gauntlet
 * Speed Gauge
 * Techno Fanny Pack
 * Gauntlet
 * Speed Gauge
 * Speed Gauge

Locations

 * Earth-Prime
 * Earth
 * United States of America
 * Missouri
 * Central City
 * S.T.A.R. Labs Central City Facility
 * Speed Lab
 * 2nd Street & Walczak, 3rd and Certo
 * 119th Street
 * Central City Police Precinct
 * McCulloch Labs
 * E. Matz Street
 * The Bentley Building
 * Mirrorverse
 * Earth
 * United States of America
 * Missouri
 * Central City
 * Speed Lab
 * E. Matz Street
 * The Bentley Building
 * Mirrorverse
 * Earth
 * United States of America
 * Missouri
 * Central City
 * Speed Lab
 * E. Matz Street
 * The Bentley Building
 * Mirrorverse
 * Earth
 * United States of America
 * Missouri
 * Central City
 * Speed Lab
 * Mirrorverse
 * Earth
 * United States of America
 * Missouri
 * Central City
 * Speed Lab
 * United States of America
 * Missouri
 * Central City
 * Speed Lab
 * Speed Lab
 * Speed Lab

Trivia

 * This episode was originally airing in Season 6 of . However, the episodes was 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.