Smallville :

Clark becomes concerned when a mysterious poet, Byron Moore, leaves love notes for Lana at her parents' grave. Clark warns her to stay away from Byron, but she is intrigued. After a mishap, Clark and Lana befriend the elusive boy and find out that he sneaks out of his house, where his parents keep him locked up in chains.

They become determined to save Byron, but he has a dangerous secret. When they release Byron from his room, the sunlight turns him into a violent creature with superhuman strength. Clark tracks down Byron and during a fight the two fall down a well shaft. The darkness returns Byron to normal long enough for Clark to get Byron to the hospital. Martha takes a position as Lionel Luthor's personal assistant.