Sam Witwer is joining the cast of Supergirl for Season 4.
The executive producers of Supergirl previewed Season 4 with TV Guide Magazine.
The CW has announced a premiere date for Supergirl Season 4.
Chris Wood will no longer be a series regular in Supergirl Season 4.
KryptonSite analyzes the final moments of Supergirl Season 3.
Preview clips for the Supergirl Season 3 finale "Battles Lost and Won"
Jeremy Jordan's Winn Schott has been bumped down to recurring status for Season 4.
Jesse Rath has been upgraded to series regular for Supergirl Season 4.
Preview images for the Supergirl Season 3 finale "Battles Lost and Won"