I Know Who You Are

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The Flash
2nd May 2017 42 mins Season 3 Episode 20

Barry and the team meet Tracy Brand, a scientist, who may be the key to stopping Savitar. Unfortunately, Killer Frost is also after Tracy so Team Flash must battle their old friend, which proves to be particularly difficult for Cisco. Joe and Cecile’s relationship takes a big turn.

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Season 3 · Episode 21

Cause and Effect

Barry takes drastic measures to stop Savitar. Meanwhile, H.R. continues to push Tracy Brand to design the trap for Savitar and Killer Frost returns with an interesting proposal.
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01 Grant Gustin profile Grant Gustinas Barry Allen / The Flash 02 Candice Patton profile Candice Pattonas Iris West-Allen 03 Danielle Panabaker profile Danielle Panabakeras Khione 04 Danielle Nicolet profile Danielle Nicoletas Cecile Horton 05 Kayla Compton profile Kayla Comptonas Allegra Garcia 06 Brandon McKnight profile Brandon McKnightas Chester P. Runk 07 Jon Cor profile Jon Coras Mark Blaine / Chillblaine 08 Geoff Johns profile Geoff JohnsCreator 09 Greg Berlanti profile Greg BerlantiCreator 10 Andrew Kreisberg profile Andrew KreisbergCreator
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