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"Don't Run" is the ninth and midseason finale episode of the fourth season of The Flash, and the seventy-eighth episode overall. It aired on December 5, 2017.

Synopsis

Amunet kidnaps Caitlin and puts meta-dampener handcuffs on her to keep her from turning into Killer Frost. Amunet tells Caitlin she needs her to perform a tricky medical task and if Caitlin fails, Amunet will kill her. Meanwhile, The Thinker traps The Flash in a speedster-proof prison. With the clock ticking, The Team doesn’t have the time or resources to track both Caitlin and Barry so Iris is forced to choose who to save.[1]

Gallery

Videos

Trivia

  • The title is a reference to Barry's final line as the CCPD show up to arrest him
  • Cisco likens Harry to Ebenezer Scrooge and the Grinch. In reply, Harry claims that "you're a mean one, I wouldn't touch you with a 39 and a half foot pole", quoting the song "You're a Mean One, Mr. Grinch" from the 1966 TV special Dr. Seuss' How the Grinch Stole Christmas!.
  • Cisco calls both Harry and Ralph humbugs, referencing Ebenezer Scrooge's catchphrase in the Charles Dickens novella A Christmas Carol.
    • Cisco claims this as a "Festivus miracle", a phrase commonly used by Kramer in the TV series Seinfeld.
  • When Amunet prevents Caitlin from transforming into Killer Frost, she quips that "Frosty melted away", referencing the 1969 TV special Frosty the Snowman in which the protagonist melts.
  • Cisco calls Amunet an "evil Mary Poppins", referencing her English accent.
  • The Flash suit is revealed to have kept the life-raft function that Cisco installed earlier and showed off in True Colors.
  • When DeVoe (disguised as Dominic) goes to describe the West house, Cisco suggests "bitchin'", a callback to the season premiere, "The Flash Reborn", in which a decoded message from a discombobulated Barry reads "This house is bitchin'".
  • DeVoe gains the ability of telepathy through his transferring his mind and consciousness into the body of Dominic. In the DC comics, DeVoe had the ability of telepathy, however, Barry Allen is immune to telepathy.

References


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