The Speed of Thought

When Barry suddenly gains the power of speed thinking, he attempts to use his new gift to save Iris. While Barry is thrilled with his new power, Cisco is hesitant to trust it. Meanwhile, Eva must face a shattering truth.

Carlos Valdes

Cisco Ramon

Victoria Park

Kamilla Hwang

Efrat Dor

Eva McCulloch / Mirror Monarch

Matt Letscher

Eobard Thawne / Reverse-Flash

Natalie Sharp

Millie Rawlins / Sunshine

Stephanie Izsak

Officer Daisy Korber

Patrick Sabongui

David Singh

Morena Baccarin

Gideon (voice) (uncredited)

Jessica Hayles

Arielle Atkins

Tom Cavanagh

Dr. Harrison Wells