Clark learns Kara is in Washington searching for the crystal. Kara is captured after she breaks into the lab and sedated with a kryptonite-infused truth serum. The serum causes her to relive a prior trip to Earth when she followed Clark's biological mother, Lara, to the Kent farm.
Clark arrives in time to save her but, after searing the machine with heat vision, he also falls victim to the serum and sees what Kara sees: his mother. In this flashback episode, Helen Slater guest stars as Clark's biological mother, Lara-El. The episode also features the evil Zor-El, who was Jor-El's brother and Kara's father.
original airdate--November 1,2007 rating--4.31 million
songs--Theme song--"Save Me" by Remy Zero