Sin (Bex Taylor-Klaus) is set to return in the upcoming episode of season 3 of Arrow and will be playing "a pivotal part in the investigation of Sara's death."

One Of Arrow's Biggest Moments To Take Place During The Flash Crossover

In an interview with TVLine at the screening of the Flash/Arrow crossover episodes, showrunner Andrew Kreisberg spoke about Sin coming back in episode 12.

"She's actually in Episode 12, titled Uprising," Kreisberg said. "She plays a pivotal part in the investigation into Sara's death."

Villain In Upcoming Episode Of Arrow To Look Up To Oliver

Recently, The Flash's executive producer, Greg Berlanti, dished about the possibility of another crossover with Arrow in the current season of both shows.

Berlanti told TVLine that fans can look forward to another merger between the shows in this chapter.

"We just started talking about that. It's so much fun to do. They're so hard to do," he said. "But I think they'll be so rewarding for everybody, ultimately, that that's our hope, for sure."

In another recent interview, Emily Bett Rickards, who plays Felicity on Arrow, dished about how her relationship with Ray Palmer (Brandon Routh) will develop over the course of the rest of season 3.

Speaking to TVLine, the actress stated that Felicity will come to rely on Palmer not only as a source of strength but also in helping keep her honest. The question about the duo's bonding was spurred by a still from the next chapter in which Felicity is seen breaking down with Palmer in the backdrop.

"That's going to be expected to come, and yes, he's going to be sort of a transparency in her life, perhaps be her polygraph, as she is for everybody else, which I find very refreshing for her," she said.

The episode will air at December 3 on The CW.

Watch the preview for the next episode here:

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