Supergirl — “Welcome to Earth” — Image SPG203b_BTS_0273 — Pictured: Behind the scenes with Melissa Benoist as Kara/Supergirl and guest Lynda Carter as President, Olivia Marsdin — Photo: Bettina Strauss/The CW — © 2016 The CW Network, LLC. All Rights Reserved

Executive producer Ali Adler talks about the introduction of Mon-El, Lynda Carter and Maggie Sawyer in this new “Inside Look” featurette from last night’s episode, “Welcome to Earth.”

Official Synopsis:

LYNDA CARTER (“WONDER WOMAN”) LANDS IN NATIONAL CITY AS PRESIDENT OLIVIA MARSDIN — An attack is made on the President (guest star Lynda Carter) as hot-button, alien vs. human rights issues heat up in National City. Supergirl (Melissa Benoist) and the DEO are assigned to protect the President and bring in the responsible party. Alex (Chyler Leigh) teams up with Detective Maggie Sawyer (Floriana Lima) to investigate the case while Kara searches for a recently escaped Mon-El (Chris Wood), who she fears may be the alien behind the assault. Rachel Talalay directed the episode written by Jessica Queller and Derek Simon (#203). Original airdate 10/24/2016.

‘Supergirl’ Season 2, Episode 3 “Welcome to Earth” airs October 24th at 8 p.m on The CW.