The Flash
Facebook/The Flash

The Flash will return on Tuesday, April 25, with its final five episodes of Season 3 and it's sure to get interesting as the season is expected to end with a shocking death.

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Spoilers as well as set photos suggest that one main character will bid adieu in the final episode and rumours are rife that it would be Caitlin Snow. Photos from the final episode show the members of Team Flash attending what looks to be a funeral and the only person missing is Caitlin, whose Killer Frost is still at large when the show returns on Tuesday.

Danielle Panabaker, the actress who essays Caitlin, recently opened up about Caitlin and Killer Frost's relationship, saying it's like an addiction.

The Flash
Facebook/The Flash

"The way it was explained to me was it's like an addict and Killer Frost is someone who lives inside with Caitlin." Panabaker said, according to Comicbook.com. "She's got this bad person inside her and it's learning how to be in control with the help of the bracelets and necklace she can squish her."

Panabaker also revealed that she had some say in the Killer Frosts vibe, and said eagle-eyed The Flash viewers may have already spotted her in one of the previous episodes.

"Earlier in the season, maybe episode 6, Cisco has a vibe where he sees vibe and killer frost fighting," she said. "You will see that again and close viewers will notice that this version of Killer Frost looks a little bit different."

The last episode will see Barry succeeding in travelling to the future to stop Savitar, whose identity is still a mystery.

This Tuesday's episode of The Flash is titled The Once and Future Flash and the synopsis reads: "While the team in 2017 search for Killer Frost, Barry travels to 2024 to find out Savitar's identity and discoivers that his friends' lives have taken very different turns after Iris' death."

The Flash airs Tuesdays on the CW.