TV Line's Matt Mitovich asked Supergirl's executive producer if Lena knows Kara's secret.
The CW has set a premiere date for Supergirl Season 3.
Odette Annable is joining the cast of Supergirl as the Season 3 villain.
Official description for the upcoming third season of The CW's Supergirl
Preview clip and "Inside" video promoting the Supergirl episode "City of Lost Children"
Spoiler description for the Supergirl Season 2 finale which is titled "Nevertheless, She Persisted"
Official preview images for the Supergirl episode "City of Lost Children"
Screen captures for the promo trailer previewing the Supergirl episode "City of Lost Children"
Preview trailer for the Supergirl episode "City of Lost Children"
"Inside" video and preview clip for the Supergirl episode "Alex"