Kevin Sorbo, Teri Hatcher Debut in New Supergirl Promo

A new promo for the next episode of "Supergirl" has debuted, featuring the first look at guest stars Kevin Sorbo and Teri Hatcher. As previously reported, Sorbo and Hatcher will be playing the King and Queen of Daxam. Sorbo is best known for his role as Hercules on "Hercules" and Hatcher is best known for her role as Lois Lane on "Lois & Clark: The New Adventures of Superman."

RELATED: The Flash/Supergirl Musical Crossover Synopsis Sets Up a Dancing Dreamworld

The episode "Star-Crossed" will air on March 20 and will lead into the musical crossover episode with "The Flash." The promo also reveals the true identity of Mon-El, who had been masquerading as a lowly servant since his arrival on Earth in the Season 2 premiere.

TERI HATCHER (“DESPERATE HOUSEWIVES,” “LOIS & CLARK: THE NEW ADVENTURES OF SUPERMAN”) AND KEVIN SORBO (“HERCULES”) GUEST STAR; DARREN CRISS (“GLEE”) MAKES HIS DEBUT AS THE MUSIC MEISTER – A new villain (guest star Teri Hatcher) comes to National City, putting Supergirl (Melissa Benoist) on high alert. Meanwhile, Winn’s (Jeremy Jordan) girlfriend, Lyra (guest star Tamzin Merchant), gets Winn in trouble with the law. Maggie (Floriana Lima) attempts to help Winn but old loyalties get in the way. The Music Meister (Darren Criss) attacks Supergirl. John Medlen directed the episode written by Katie Rose Rogers & Jess Kardos. Original airdate 3/20/2017.

Starring Melissa Benoist as the Girl of Steel, “Supergirl” airs Mondays at 8 pm ET/PT on The CW. The series also stars Mehcad Brooks as Jimmy Olsen, Chyler Leigh as Alex Danvers, Jeremy Jordan as Winn Schott, David Harewood as Martian Manhunter and Chris Wood as Mon-El.

Crisis Gives Tom Welling's Clark Kent the Farewell He Deserves

More in TV