TV Smallville - Season 3 Episode 18 : Truth Smallville - Season 3 Episode 18 : Truth 8.187/10 by 4334 users 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. Details Casts Posters Images Title Smallville - Season 3 Episode 18 : Truth Alternative Titles First Air Date 2001-10-16 Last Air Date 2011-05-13 Number of Episodes 216 Number of Seasons 10 Genres Sci-Fi & Fantasy, Action & Adventure, Drama, Networks The WB, The CW, Casts Tom Welling, Erica Durance, Cassidy Freeman, Justin Hartley Plot Keywords , Clark Kent Tom Welling Lois Lane Erica Durance Tess Mercer Cassidy Freeman Oliver Queen Justin Hartley Episodes List Smallville Season 3 :Episode 1 Exile Exile 2003-10-01 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 2 Phoenix Phoenix 2003-10-08 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 3 Extinction Extinction 2003-10-15 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 4 Slumber Slumber 2003-10-22 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 5 Perry Perry 2003-10-29 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 6 Relic Relic 2003-11-05 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 7 Magnetic Magnetic 2003-11-12 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 8 Shattered Shattered 2003-11-19 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 9 Asylum Asylum 2004-01-14 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 10 Whisper Whisper 2004-01-21 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 11 Delete Delete 2004-01-28 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 12 Hereafter Hereafter 2004-02-04 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 13 Velocity Velocity 2004-02-11 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 14 Obsession Obsession 2004-02-18 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 15 Resurrection Resurrection 2004-02-25 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 16 Crisis Crisis 2004-03-03 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 17 Legacy Legacy 2004-04-14 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 18 Truth Truth 2004-04-21 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 19 Memoria Memoria 2004-04-28 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 20 Talisman Talisman 2004-05-05 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 21 Forsaken (1) Forsaken (1) 2004-05-12 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 3 :Episode 22 Covenant (2) Covenant (2) 2004-05-19 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark...