Episode 62 of "Smallville"
s03e18 Truth
Title: Truth
Original Air Date: 04/21/2004 on WB
Director: James Marshall
Writer: Drew Z. Greenberg
Guest Stars: Don Thompson (Chloe's Father's Friend), Gillian Barber (Mrs. Taylor), Linden Banks (Jonah Doyle), Mark Houghton (Lab Technician), Andrew Francis (William Taylor), Samantha Banton (Rebecca), Ryan Steele (Doug), Christie King (Mindy), Victoria Anderson (Hospital Receptionist), Ivan Cormak (Doctor)
Plot Outline:
When Chloe accidentally inhales a mysterious krypto-gas, she discovers it acts as a truth serum to anyone who comes in contact with her and decides to take advantage of her new power by going to the Kents to find out Clark's secret. However, her new power comes with fatal consequences and Clark must find an antidote before she discovers the truth about him or worse, dies.
Episode Pictures:
