Calista Flockhart is officially returning to Supergirl as Cat Grant. Cat Grant is Kara Danvers former boss and corporate head of CatCo.

Details are still mostly under wraps, but Flockhart will appear in the final two episodes of Supergirl’s second season. The first of those episodes will air Monday, May 15, and the finale will follow on May 22.

Flockhart was a series regular during Supergirl’s first season, which aired on CBS. With Supergirl’s move to the CW for its second season, Flockhart became a recurring guest star. Cat Grant vacated her position at CatCo to take a leave of absence and seek new challenges. This return will be the first time Cat Grant has been seen on the show since the second episode of Supergirl Season 2. Flockhart is the second character now slated for a major return before the end of Supergirl Season 2. Tyler Hoechlin will also reprise his role as Superman for the Supergirl Season 2 finale.

Supergirl airs Mondays at 8 p.m. ET on The CW. When she was 12 years old, Kara Zor-El escaped the doomed planet Krypton and was sent to earth where she was protected and raised by her foster parents, Jeremiah (Dean Cain) and Eliza Danvers (Helen Slater) and her foster sister, Alex (Chyler Leigh). Under their supervision, Kara learned to conceal the phenomenal powers she shares with her famous cousin, Superman, in order to keep her identity a secret. Years later, Kara was living a “normal” life in National City, assisting media mogul and fierce taskmaster Cat Grant (Calista Flockhart) and working beside her friend and IT technician Winslow “Winn” Schott (Jeremy L. Jordan) and famous photographer James Olsen (Mehcad Brooks), who Grant hired away from Metropolis’s Daily Planet. When Alex’s life was threatened in a plane crash, Kara took to the sky to rescue her. In the aftermath, Kara decided she could no longer sit on the sidelines and came out as Supergirl. She now balances her job at CatCo with her work at the Department of Extra-Normal Operations (DEO), a super-secret government agency where Alex also works. At first, the head of the DEO, Hank Henshaw (David Harewood), was resistant to Supergirl joining the DEO, until it was revealed that Hank was actually J’onn J’onzz, the Martian Manhunter, who had promised Jeremiah Danvers on his deathbed that he would protect both Alex and Kara. It has since been discovered that Jeremiah is actually alive and being held by Cadmus, a dangerous quasi-military organization that sees all aliens as threats. In Season One, Supergirl soared fighting crime and battling various villains, chief among them two Kryptonians who were intent on destroying earth, but she has yet to find that same empowerment as Kara Danvers.