The Flash
› Season 3
S3 E21: 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.
| Air date | May 9, 2017 |
|---|
| Runtime | 42 minutes |
|---|
| TMDB rating | ★ 7.4/10 |
|---|
