TV Smallville - Season 2 Episode 18 : Visitor Smallville - Season 2 Episode 18 : Visitor 8.187/10 by 4334 users After a schoolmate claims to be an alien and proves it by using heat vision, Clark investigates and believes the boy is from Krypton. Meanwhile, Helen confronts Lex over the locked room in the mansion that holds his investigation of Clark's secrets. Details Casts Posters Images Title Smallville - Season 2 Episode 18 : Visitor 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 2 :Episode 1 Vortex Vortex 2002-09-24 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 2 :Episode 2 Heat Heat 2002-10-01 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 2 :Episode 3 Duplicity Duplicity 2002-10-08 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 2 :Episode 4 Red Red 2002-10-15 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 2 :Episode 5 Nocturne Nocturne 2002-10-22 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 2 :Episode 6 Redux Redux 2002-10-29 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 2 :Episode 7 Lineage Lineage 2002-11-05 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 2 :Episode 8 Ryan Ryan 2002-11-12 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 2 :Episode 9 Dichotic Dichotic 2002-11-19 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 2 :Episode 10 Skinwalker Skinwalker 2002-11-26 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 2 :Episode 11 Visage Visage 2003-01-14 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 2 :Episode 12 Insurgence Insurgence 2003-01-21 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 2 :Episode 13 Suspect Suspect 2003-01-28 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 2 :Episode 14 Rush Rush 2003-02-04 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 2 :Episode 15 Prodigal Prodigal 2003-02-11 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 2 :Episode 16 Fever Fever 2003-02-18 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 2 :Episode 17 Rosetta Rosetta 2003-02-25 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 2 :Episode 18 Visitor Visitor 2003-04-15 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 2 :Episode 19 Precipice Precipice 2003-04-22 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 2 :Episode 20 Witness Witness 2003-04-29 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 2 :Episode 21 Accelerate Accelerate 2003-05-06 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 2 :Episode 22 Calling Calling 2003-05-13 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 2 :Episode 23 Exodus Exodus 2003-05-20 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark...