In less than a month, Supergirl returns to The CW for its fifth season and the network has released its first teaser trailer for the premiere.

The Season 5 premiere episode, titled "Event Horizon," will see Kara Danvers and Lena Luthor confront one another over their newly estranged relationship while a new villain in Midnight arrives to confront the Girl of Steel, unleashing a strange, dark energy attack against the Kryptonian hero.

RELATED: Supergirl Season 5 Poster Gives New Look at Show's Key Players

Jennifer Cheon Garcia (The 100) was officially announced being cast as Midnight in July as a villain who is the living embodiment of darkness who escapes from an otherworldly maximum security prison.

With Supergirl donning a new suit as she continues to defend National City in the build-up to this season's Arrowverse crossover "Crisis on Infinite Earths" while Lena has discovered Kara's secret alter ego, the new villain may be the least of Kara's concerns in Season 5.

RELATED: Supergirl Showrunner Teases Season 5 as ‘Ode to Black Mirror’

Returning Sunday, Oct. 6 at 9 p.m. ET/PT on The CW, Supergirl stars Melissa Benoist as Kara Danvers, David Harewood as Martian Manhunter, Mehcad Brooks as Jimmy Olsen and Chyler Leigh as Alex Danvers.

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