With the show wrapping up and Lex making his return and meeting Tess who are SPOILERS brother and sister, where is the other Luthor brother Lucas? He was part of a small story arc in season 2 and seen in the episode Prodigal. Following this Lex said he was "safe". Lex couldn't have killed him as he wasn't a villian yet at that point in the show. You can't just forget about a character that has the last name LUTHOR. Any suggestions as to where he is and why he has not shown up?