This week's episode of "The Flash" titled "I Know Who You Are" will finally unravel the mystery behind Savitar's identity. Following a brief promo for the episode, an extended trailer shows glimpses of Caitlin in full-Killer Frost mode working with Savitar, and Barry confronting the self-proclaimed God of Speed.

Due to Savitar's experience in the future, the villain has toyed with Team Flash all of Season 3 with his extensive knowledge of their strengths and weaknesses. With that in mind, it seems as though Barry has finally put all the pieces together and deduced who Savitar really is. The trailer concludes with Savitar saying, "It's about time," and then kneeling down to presumably reveal himself, in the same manner he did with Caitlin in the previous episode, "The Once and Future Flash."

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In addition to the struggle of trying to save Iris and defeat Savitar, Team Flash is also doing their best to get Caitlin back on their side. However, their attempts may prove futile for quite some time. In a recent interview, star Danielle Panabaker teased more Killer Frost in the show's next season.

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Starring Grant Gustin as the Scarlet Speedster, “The Flash” airs Tuesdays at 8 pm ET/PT on The CW. The series also stars Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Candice Patton, Danielle Panabaker and Keiynan Lonsdale