SE17
Flash Back
⚠ Spoiler alert This recap gives away what happens in this episode.
Episode Summary & Review
Aired 2016-03-29.
When Barry reaches a dead end in going faster, he decides to travel into the past and trick Eobard Thawne–posing as Harrison Wells–into showing him how to go faster. However, something, in the timestream follows Barry back… and it’s not friendly.