The Exorcism of Nash Wells

Synopsis
The Flash takes on a dangerous new meta named Sunshine. Cisco sets out to help Nash.

Main/Featured Characters

 * Team Flash
 * The Flash (Barry Allen)
 * Caitlin Snow
 * Frost (Caitlin Snow)
 * Cecile Horton
 * Cisco Ramon
 * Joe West
 * Nash Wells
 * Central City Citizen
 * Team Citizen
 * David Singh
 * Daisy Korber
 * David Singh
 * Daisy Korber
 * Daisy Korber

Villains

 * Reverse-Flash (Eobard Thawne)
 * McCulloch Technologies
 * Eva McCulloch
 * Kamilla Hwang
 * Iris West-Allen
 * Sunshine (Millie Rawlins)
 * Sunshine (Millie Rawlins)
 * Sunshine (Millie Rawlins)
 * Sunshine (Millie Rawlins)

Other Characters

 * Arielle Boyd
 * Cicada
 * Cicada

Objects

 * Cicada's dagger
 * Neural splicer
 * Prismic Reflector
 * Speed gauge
 * Time Sphere

Events

 * Sunshine's attack

Locations

 * Earth
 * United States of America
 * Central City
 * CC Jitters
 * Central City Citizen
 * Central City Police Department
 * Mercury Labs
 * S.T.A.R. Labs
 * Earth-26
 * Earth-719

Trivia

 * The storyline where Eobard Thawne possessing a body i similar to the one of Edward Claris possessing Max Mercury.
 * This episode revealed that Cecile's mom passed away in 1995.
 * Cisco said that Thawne has "Linda Blair'd" Nash, referencing the actor's role as the possessed child Regan MacNeil in The Exorcist films.
 * This is the first episode where the character of Iris West does not appear.
 * Similarly Allegra Garcia doesn't appear but her doppelgänger did.
 * Cisco relates multiple psyches in a single brain as "Tyler Durden times 1000", referencing the split personality of the protagonist of the Fight Club film. Thawne overhears and was about to quote the first rule of Fight Club, before being cut off.
 * The color red is the third color used for Thawne disappearance.
 * The first being blue that appeared in.
 * The second being yellow that appeared in.
 * And finally, the red color used in the episode.
 * Due to Danielle Panabaker's pregnancy during the shooting of this episode, all scenes were shot above her waistline and the most scenes of Frost fighting were done by a stunt double.