17-th episode of 9-th season "Smallville"

What "Smallville" 17-th episode about

Zod continues to pose as "The Blur" and asks Lois to investigate one of Tess' secret labs. An explosion rocks the lab, and Lois is rescued by John Corben who was a subject of multiple experiments. While investigating the explosion, Clark is exposed to red kryptonite. And infected Clark takes Zod to the Fortress. Tess turns to Chloe for help and they send in Corben to stop Clark from revealing all his secrets.

Episode number: 17

Episode name: "Upgrade"

Episode release date: 17 april 2010 at 00:00

Status: aired

Rating: 7.8