“Solitude” — Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort, pictured), a dangerous being who can transport via the Internet and who has a connection to Kara’s past, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2016 CBS Broadcasting, Inc. All Rights Reserved

“Solitude” — Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort, pictured), a dangerous being who can transport via the Internet and who has a connection to Kara’s past, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2016 CBS Broadcasting, Inc. All Rights Reserved

“Solitude” — Kara (Melissa Benoist, left) travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort, right), a dangerous being who can transport via the Internet and who has a connection to Kara’s past, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2016 CBS Broadcasting, Inc. All Rights Reserved

“Solitude” — Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort, pictured), a dangerous being who can transport via the Internet and who has a connection to Kara’s past, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2016 CBS Broadcasting, Inc. All Rights Reserved

“Solitude” — Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort, pictured), a dangerous being who can transport via the Internet and who has a connection to Kara’s past, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2016 CBS Broadcasting, Inc. All Rights Reserved

“Solitude” — Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort, pictured), a dangerous being who can transport via the Internet and who has a connection to Kara’s past, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2016 CBS Broadcasting, Inc. All Rights Reserved

Official Synopsis:

Laura Vandervoort Guest Stars as Indigo

“Solitude” – Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort), a dangerous being who can transport via the Internet and who has a connection to Kara’s past. Also, James’s relationship with Lucy reaches a crossroads, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network.  .  

Stars: Melissa Benoist as Kara Danvers/Supergirl, Calista Flockhart as Cat Grant, Chyler Leigh as Alex Danvers, Mehcad Brooks as James Olsen, David Harewood as Hank Henshaw and Jeremy Jordan as Winslow “Winn” Schott.

Recurring Cast: Jenna Dewan-Tatum as Lucy Lane, Briana Venskus as Agent Vasquez, Chris Vance as Non, Italia Ricci as Siobhan Smythe, Jay Jackson as News Anchor.

Guest stars: Laura Vandervoort as Indigo, Patrick O’Connell as General Mathers, Kelly Chavers as Girlfriend, Ruben Vernier as Boyfriend, Sebastian Velmont as Silo Guard #1, Nick Jaine as Guy #1, Carly Nykanen as Woman, Michael Hanson as Guy#2.

Story by Rachel Shukert. Teleplay by Anna Musky-Goldwyn and James DeWille. Directed by Dermott Downs.

‘Supergirl’ Season 1, Episode 14 “Solitude” airs Monday, February 29th at 8:00-9:00 PM, ET/PT.