7.4/1044 votes#1 - The Nuclear Man
Season 1 Episode 13 - Aired 2/10/2015
While Barry, Harrison, and Caitlin hunt down Ronnie, who has attacked a man, Joe recruits Cisco to help him learn the truth about who murdered Nora Allen.
Director: Glen Winter
Writer: Katherine Walczak
7.1/1037 votes#2 - Family of Rogues
Season 2 Episode 3 - Aired 10/20/2015
When Barry and the team find out Captain Cold has been kidnapped, they form an uneasy alliance with his sister, Lisa. However, Barry feels double-crossed when he finds out Snart is working with his father, Lewis Snart on a heist. Meanwhile, Joe is faced with a difficult decision.
Director: John F. Showalter
Writer: Katherine Walczak
6.8/1031 votes#3 - Back to Normal
Season 2 Episode 19 - Aired 4/26/2016
A meta-human with super strength named Griffin Grey mistakes Harry for Earth-1 Harrison Wells and kidnaps him, demanding that Wells cure him from his current condition. Realizing another brilliant Wells could help track Griffin’s location, Barry asks Jesse to help. Meanwhile, Wally corners Joe about The Flash.
Director: John F. Showalter
Writer: Katherine Walczak
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Katherine Walczak Ratings Summary
"The Nuclear Man" is the best rated episode written by Katherine Walczak. It scored 7.375/10 based on 44 votes. It was directed by Glen Winter. It aired on 2/10/2015 and is rated 0.3 points higher than their second-best episode, "Family of Rogues".