Extended promo trailer for the Flash episode "Invincible"
Screen captures from an extended version of the Flash promo trailer for "Invincible"
Preview images for the Flash episode "Invincible" featuring Katie Cassidy as Black Siren
Screen captures from the promo trailer for the Flash episode "Invincible" guest starring Katie Cassidy
Preview trailer promoting the Flash episode "Invincible" guest starring Katie Cassidy
Arrow's Katie Cassidy guest stars in the May 17 episode of The Flash, titled "Invincible"
Katie Cassidy from Arrow will be playing the Earth-2 version of her character on The Flash.