Flash Back
The Flash Season 2



Critic Ratings: 16
Critics Consensus

"Flash Back" is a relatively solid offering as Barry travels back in time, encountering both old foes and new threats, such as the fearsome follower, Time Wraith.

Episode Info

Barry becomes determined to get back to Earth-2 to stop Zoom, but he realizes he needs to increase his speed. He travels back in time and masquerades as his earlier self to get his arch-nemesis Dr. Wells to teach him how to run faster. But while there, Barry faces familiar foe Hartley Rathaway and old friend Eddie Thawne.


Grant Gustin
as Barry Allen/The Flash
Candice Patton
as Iris West
Carlos Valdes
as Cisco Ramon
Danielle Panabaker
as Caitlin Snow
Jesse L. Martin
as Det. Joe West
Tom Cavanagh
as Harrison Wells
Teddy Sears
as Jay Garrick
Shantel VanSanten
as Patty Spivot
Andy Mientus
as Hartley Rathaway
Rick Cosnett
as Eddie Thawne
Show More Cast

Critic Reviews for Flash Back

The episode reaffirms how sweet Barry Allen can be. It also adds a bit more texture to the show's depiction of time travel with the introduction of a Time Wraith, a low-rent Dementor-type figure.

Jul 27, 2018 | Rating: 3/5 | Full Review…

Perhaps it's just been a while since I've watched the early episodes, or maybe it's just the show's desire to show the difference in the team from then to its current state, but everyone seems if not colder, then less cohesive.

Jul 26, 2018 | Full Review…

Time-travel is usually an entertaining diversion, but it's about time to get this show on the road.

Jul 24, 2018 | Rating: B | Full Review…

Within the confines of 'Flash Back', viewers are given a chance to see the enemies interact on a new playing field, one where Eobard doesn't necessarily have the upper hand.

Aug 2, 2018 | Full Review…

They opened the season on this, but I feel it kind of fell by the wayside, but "workaholic Barry" who is just obsessed with getting faster and faster in order to beat Zoom is a cool side of the character.

Jul 25, 2018 | Rating: 4/5 | Full Review…

A good episode if not a great one, it brought back a sense of urgency to the show, especially with the return of Well's Thawne, as good of a villain as we're ever going to get and easily posing a greater threat than Jay.

Jul 25, 2018 | Rating: 7.5/10 | Full Review…

Last night's episode of The Flash was transitional, signaling that the show may be headed into the final story arc of its second season.

Aug 3, 2018 | Full Review…

The episode's most immediate threat is a "time wraith" that follows Barry on his trip. It's a different kind of villain for the this show, one that combines elements of dark fantasy and science fiction in a way I associate more with Doctor Who.

Aug 7, 2018 | Full Review…

There's a goofiness and a levity that's been understandably absent this season, as we've seen Barry face some very dark conflicts and respond in justifiable ways.

Jul 24, 2018 | Full Review…

Ultimately, the Time Wraith concept was a means to an end in support of what really mattered in this episode - Barry's brief reunion with the original Harrison Wells.

Aug 2, 2018 | Rating: 9.1 | Full Review…

Barry might've figure out how to travel through time, but it's obvious he still has a lot to learn in the coming seasons.

Aug 1, 2018 | Full Review…

The show is simply so good with those last-minute "stings" that when it doesn't deliver one, there's an emptiness.

Jul 30, 2018 | Full Review…