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- Writers: Ali Adler, Greg Berlanti, Andrew Kreisberg
- Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh, Jeremy Jordan
Supergirl must beat a ruthless new gang who has been armed with dangerous new alien technology. When Cadmus sends a video to the DEO, the team realizes Cadmus is the one staffing the criminals for a secret mission. Meanwhile, Kara gets Mon-El a job as an intern at CatCo, James makes an important decision and Lena invites Kara to attend one her fundraisers.