Cause and XS

"Cause and XS"
Information
Season 5 » Episode 14
Episode number	106 of 184
Original airdate	February 12, 2019
Written by	Todd Helbing Jeff Hersh
Directed by	Rachel Talalay
Guest stars
Victoria Park as Kamilla Hwang
Chronology
Preceded by	"Goldfaced"
Followed by	"King Shark vs. Gorilla Grodd"

"Cause and XS" is the fourteenth episode of the fifth season of The Flash, and the one-hundred-sixth episode overall. It aired on February 12, 2019.

Synopsis

After Iris lands in serious danger, Nora races to save her mother. Barry puts the finishing touches on the meta-human cure, leaving Cisco with a rare night off so he decides to take Kamilla on a date.

Trivia

• The episode's title is a play on the phrase "cause and effect".
  • Which coincidentally was an episode back in Season 3 of The Flash
• This episode is the shortest clocking in at under 35 minutes.
• Nora resets the timeline 52 times, a reference to the famous DC number 52.
• When Barry teaches Nora about time travel, he gives her the same explanation Jay Garrick gave him in "Paradox".
• The animation when Nora runs back in time is somewhat similar to the animation of Earth-90's Barry Allen being thrown through time in The Flash​.
• The events of this episode are very similar to the events of the DC's Legends of Tomorrow​ episode "Here I Go Again", where Zari dreams that she's stuck in a time loop, reliving the same hour over and over again with the Waverider exploding at the end of each loop.
• The first time that Cisco goes on his date with Kamilla (before Nora resets the timeline for the first time), he says that the company he works for is called Ramon Industries, a possible reference to the company he owned in the Flashpoint timeline.