The CW has released eight images from “Arctic,” the Season 7 finale of Smallville scheduled to air on Thursday, May 15.

Here’s the official description.

“Kara (Laura Vandervoort) tells Lex (Michael Rosenbaum) he is destined to defeat the Traveler and offers to take him to the Fortress to learn how. Clark (Tom Welling) is stunned that Kara would go to Lex, but it is revealed that Brainiac is impersonating Kara and she’s actually trapped in the Phantom Zone. Chloe is arrested by the Department of Domestic Security and Lana awakens from her comatose state. Meanwhile, in an epic turn of events, Clark and Lex face off in the Fortress and Lex learns Clark’s secret.”

The episode was written by Don Whitehead and Holly Henderson and directed by Todd Slavkin.

Thanks to The Continuum for the images & description!