A janitor takes Clark's high-school class hostage at LuthorCorp., claiming his "jitters" were caused by a mysterious contaminant.
The Dream. Reed, Caitlin and Lauren meet with a doctor who treats patients with debilitating X genes, Lauren finds out the doctor is not who she thought she was.
When Junior is kidnapped as leverage to retrieve the stolen list of undercover CIA agents, Tani and Quinn ask Magnum and Higgins for help.
Game Changer.Tensions within the Inner Circle are at an all-time high, as Andy comes to Rebecca's defense against Reeva.