Supergirl 2×03 “Welcome To Earth” Promo and Sneak Peek

Official episode description:

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 and the DEO are assigned to protect the President and bring in the responsible party. Alex Danvers 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.

“Welcome To Earth” airs Oct 24, 2016 on The CW.