CW | 9:00 pm

Watch for Leviathan's "agenda for Earth" to unfold as an extended storyline in Season 5 of this superhero saga, which opens with a premiere called "Event Horizon." Kara (Melissa Benoist) is surprised to discover that CatCo has a new owner who has brought in a star reporter. New couples start to connect and explore their budding relationships, as J'onn J'onzz (David Harewood) receives an unexpected visitor. Chyler Leigh and Katie McGrath also star.