In The Flash 113 after Ronnie attacks a physicist, Barry and the team realize they need to go after Caitlin’s fiancé who is now a dangerous meta-human…

The episode airs on February 10th, 2015 on the CW network. The series stars Barry Allen, Grant Gustin, Jesse L Martin, Tom Cavanagh, Carlos Valdes, Candice Patton and Rick Cosnett. This episodes guest stars Robbie Amell, Victor Garber, Bill Dow, Michelle Harrison and Malese Jow.

Check out the episode’s trailers above and the official lowdown below.

The Flash 113 – Official Information

Season 1: “The Nuclear Man”

Robbie Amell and Victor Garber guest star as Firestorm

After Ronnie (guest star Robbie Amell) attacks a physicist (guest star Bill Dow), Barry (Grant Gustin) and the team realize they need to go after Caitlin’s (Danielle Panabaker) fiancé who is now a dangerous meta-human.

They deduce the best way to track Ronnie is to find Dr Martin Stein (guest star Victor Garber) who was working on a project called F.I.R.E.S.T.O.R.M. Barry struggles to balance his duties as The Flash and his relationship with Linda Park (guest star Malese Jow).

Joe (Jesse L Martin) enlists Cisco’s (Carlos Valdes) help to reinvestigate the murder of Nora Allen (guest star Michelle Harrison). General Eiling (Clancy Brown) returns to Central City.

Glen Winter directed the episode written by Andrew Kreisberg & Katherine Walczak (#113). Original airdate 2/10/2015.