Matthew Harrison

To regain key incriminating information about his father's past that he lost when his memory was erased, Lex joins an experimental program headed by Dr. Garner (recurring guest star MARTIN CUMMINS). Knowing that Lex will also remember the secret of Clark's powers if he regains his memory, Clark tries to stop him--but Lionel and Garner capture Clark and expose him to the same radical treatment, hoping to reveal his mystery.

While Carlos struggles emotionally, he and Kiera must stop Liber8 from unleashing a chemical attack on the city.

Rip crosses the line in his effort to save his family, when he takes the team into the future to eliminate one of Savage’s allies.

When Kennex and Dorian investigate the murder of a "chrome," there are no signs of trauma, other than a very small pinprick on the back of his neck. As the investigation unfolds, it's revealed that the murder suspect is tapping into the DNA of his victims in pursuit of perfection.

Kyle and Megan must weather a huge rumor that threatens to upend both their careers; Terence learns something surprising about DeAnn.