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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Episode Details: The Flash Season 3 Episode 20
| Title | I Know Who You Are |
| Episode | 20 |
| Season | 3 |
| Release | May 2, 2017 |
| Overview | 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. |
| Rating | 7.9 |
| Vote Count | 24 |
