The Flash Season 3



Critic Ratings: 11
Critics Consensus

"Monster" may be light on action, but Tom Cavanagh provides a refreshing comedic punch.

Episode Info

Caitlin visits her mother, a renowned biomedical researcher, to see if she can help with her growing meta-human powers. But her mom treats her like a test subject, which results in a major confrontation. Meanwhile, a mysterious new meta-human attacks Central City, and Barry tries to convince Julian to let him assist on the case.


Grant Gustin
as Barry Allen/The Flash
Candice Patton
as Iris West
Danielle Panabaker
as Caitlin Snow
Carlos Valdes
as Cisco Ramon
Jesse L. Martin
as Det. Joe West
Tom Cavanagh
as Harrison Wells
Susan Walters
as Dr. Tannhauser
Show More Cast

Monster Photos

Critic Reviews for Monster

I can't deny that Cavanagh's turn as H.R. provided most of tonight's best moments.

Jul 25, 2018 | Rating: B | Full Review…

I would totally be fine with the show killing off Julian or transferring him to some other city.

Aug 1, 2018 | Rating: 3/5 | Full Review…

The Julian-Barry stuff was a highlight of the episode and I hope the show continues building this dynamic.

Jul 26, 2018 | Rating: B- | Full Review…

Felt very much like Season 1.

Jul 30, 2018 | Rating: 3/5 | Full Review…

As long as Cavanagh is there, the show is better. No matter who he's playing.

Jul 31, 2018 | Full Review…

The Flash went from luke warm shower last week to a straight up tundra ice bath episode this week.

Aug 2, 2018 | Full Review…

I like this. I like this as much as I like the idea that Gladiator is called Sweaty Men on Earth-19, and as much as I like Iris on the ground during a monster attack, trying to help in a very practical way.

Aug 24, 2018 | Full Review…

This week's Flash didn't offer much in terms of action, spectacle or a compelling villain. But it did deliver plenty of great character interaction.

Aug 2, 2018 | Rating: 7.6/10 | Full Review…

The plot works rather well, giving Caitlin some interesting motivation for what could grow into a something of a villainous turn.

Aug 1, 2018 | Full Review…

The new Harry, or "H.R." for short, is Tom Cavanagh's fourth iteration of the character... and he's a ridiculous joy.

Jul 25, 2018 | Full Review…

With a timely reprieve from multiple speedsters and Dr. Alchemy scheming, Monster was a refreshingly simple episode of The Flash.

Nov 3, 2016 | Rating: 8.5/10 | Full Review…