The Flash (2014 TV Series) Episode: Cause and Effect

"Cause and Effect"
Gallery
The Flash  Season 3: Episode 21
May 9, 2017
Directors	David McWhirter
Writers	Judalina Neira Lauren Certo
Previous Episode	"I Know Who You Are" (May 2, 2017)
Next Episode	"Infantino Street" (May 16, 2017)

It's the first time he hasn't been weighed down by the tragedies of his past, you know? First time he's actually been free of them.

—Iris West

Cause and Effect is an episode of season 3 of The Flash. It premiered on May 9, 2017.

Appearing in "Cause and Effect"

Featured Characters:

• The Flash (Barry Allen/"Bart") (Flashback and main story)

Supporting Characters:

• D.A. Cecile Horton
• Central City Police Department
  • Det. Joe West (Flashback and main story)
• The Flash (Barry Allen's Time Remnant) (Dies in flashback)
• Team Flash (Flashback and main story)
  • Cisco Ramon (Flashback and main story)
  • H.R. Wells (Earth-19)
  • Iris West (Flashback and main story)
  • Julian Albert
  • Kid Flash (Wally West) (Flashback and main story)
• Tracy Brand

Antagonists:

• Heat Monger (Lucius Coolidge) (Single appearance)
• Savitar (Barry Allen) (Origin)
  • Killer Frost (Caitlin Snow) (Flashback and main story)

Other Characters:

• Central City Fire Department (Cameo)
• Channel 52 (On a TV or computer screen) (Cameo)
• Judge Hankerson (First appearance)
• Henry Allen (Deceased) (Flashback and main story)
• King Shark (Earth-2) (Cameo)
• Nora Allen (Deceased) (Flashback and main story)
• Reverse-Flash (Eobard Thawne/"Harrison Wells") (Flashback only) (Cameo)
• Zoom (Earth-2) (Flashback only) (Cameo)
• Cult of Savitar (Mentioned only)
• Eddie Thawne (Deceased) (Mentioned only)
• God (Mentioned only)
• Gods (Mentioned only)
• Hartley Rathaway (Mentioned only)
• Henry Allen (Flashpoint Timeline) (Mentioned only)
• Jay Garrick (Earth-3) (Mentioned only)
• The Legends (Mentioned only)
  • Mick Rory (Mentioned only)
• Nora Allen (Flashpoint Timeline) (Mentioned only)
• Ronnie Raymond (Mentioned only)
• Team Flash (Savitar's Future) (Mentioned only)
  • Barry Allen (Mentioned only)
  • Cisco Ramon (Mentioned only)
  • Iris West (Deceased) (Mentioned only)
  • Joe West (Mentioned only)
  • Wally West (Mentioned only)
• Captain Kirk (Mentioned only)

Locations:

• Multiverse (Mentioned only)
  • Earth-1 (Flashback and main story)
    • Central City (Flashback and main story)
      • Allen House (Flashback only) (Cameo)
      • CC Jitters
      • CCPD Headquarters
      • Central City Courthouse
      • Savitar's Hideout
      • S.T.A.R. Labs (Flashback and main story)
        • Cisco Ramon's Workshop
        • The Cortex
        • Speed Lab
      • West-Allen's Apartment
      • West House (Flashback only)
      • Central City High School (Mentioned only)
    • Keystone City
      • Iron Heights (Flashback only) (Cameo)
    • Star City
      • A.R.G.U.S. Headquarters (Cameo)
  • Speed Force (Cameo)
    • Speed Force Prison (Mentioned only)
  • Earth-19 (Mentioned only)
  • Flashpoint Timeline (Mentioned only)
  • Savitar's Future (Unnamed) (Mentioned only)
  • Timestream (Mentioned only)

Items:

• Allen Family Ring
• Dominator Power Source (First appearance) (Cameo)
• Magnetar (Flashback only) (Cameo)
• Savitar's Armor
• Speed Force Bazooka (Real name revealed) (First full appearance)
• S.T.A.R. Labs Treadmill

Vehicles:

• Waverider (Mentioned only)

Concepts:

• Flashtime (Unnamed)
• Metahumans
• Time Remnant
• Time Travel
  • Time Loop

Notes

• It is revealed that Savitar is a paradox of the Post-Flashpoint continuity.
  • In a future 2021, a future Barry Allen creates time remnants to defeat Savitar who kills each one of them but one. However, Savitar is actually trapped into the Speed Force by Future Barry, the estranged time remnant goes rogue, journeys back in time and becomes Savitar, creating the time loop that allows his existence.
  • Savitar has to kill Iris in order to ensure his birth in the future.

Trivia

• The title of the episode is a reference to Savitar's existence as a paradox as well as the time changes due to Barry temporary losing his memory.
• "Post 58" is The Chronicles of Cisco post regarding this episode.
• In an alternate version of Earth-1, which was born as a consequence of Barry Allen never creating the Flashpoint Timeline, Savitar never came to exist as Barry never altered the original timeline.

See Also

• 3 Images from The Flash (2014 TV Series) Episode: Cause and Effect
• Episodes of The Flash (2014 TV Series)
• Images from The Flash (2014 TV Series)
• Gallery for the The Flash (2014 TV Series) series

Recommended Media

• None.

Links and References

• None.

Footnotes