'The Flash' Season 3 Episode 8 Spoilers, Updates: The Beginning Of 'Supergirl', 'Arrow' & 'Legends Of Tomorrow' Crossover; 'Killer Frost' Raised The Bar Higher

Caitlin is the most interesting character in "The Flash" Season 3 to date as she occasionally transform into "Killer Frost". Critics point this story development as one of the best idea the showrunners have ever decided to add in the show.

"The Flash" was already amazing with all the power show it originally has but when the creators added "Killer Frost" into the scene, things became more heart-stopping and suspenseful. Avid fans of the comics already knew what will happen to Caitlin Snow the moment she was introduced. However, they did not expect her transformation to become such a bomb.

According to Den of Geek, there were attempts in the past episodes to show "Killer Frost" but only the recent episodes have shown the best version of the transformation. The hesitant "Killer Frost" which does not really fully turn Caitlin into the inner villain that lives inside her. Because of this, we don't really know how worse her character will turn into in the succeeding episodes of "The Flash" Season 3.

Meanwhile, the show has already released the synopsis for "The Flash" Season 3 Episode 8. CaterMatt reports that the Arrowverse crossover which fans are long waiting for will officially begin. The synopsis says that Barry will finally meet the Green Arrow to ask for help in defeating the Dominators.

After discussing things, they realized that the two of them cannot solve the problem; they needed the whole pack of Supers to defeat a big group of intruders. "[Barry and Green Arrow] track down the Legends of Tomorrow, and Barry and Cisco (Carlos Valdes) create a breach to bring back a secret weapon - Supergirl (guest star Melissa Benoist)," the synopsis revealed. Even so, the Supers will still encounter a big problem that will challenge how they will trust each other in defeating the Dominators.