TV Smallville - Season 5 Episode 17 : Void Smallville - Season 5 Episode 17 : Void 8.187/10 by 4334 users Distraught over her break-up with Clark, Lana goes to a rogue medical student who experiments with a dangerous kryptonite-based serum that allows people to flat-line but see their dead loved ones. Lana attempts to see her dead parents using the serum and when Clark returns from Honduras to help her, the doctor injects him with the serum and Clark speaks with his dead father...who warns him that Lionel knows his secret. Meanwhile, Lionel continues working to get closer to Martha, and Lex has a near-death vision of his mother. Details Casts Posters Images Title Smallville - Season 5 Episode 17 : Void 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 5 :Episode 1 Arrival Arrival 2005-09-29 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 5 :Episode 2 Mortal Mortal 2005-10-06 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 5 :Episode 3 Hidden Hidden 2005-10-13 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 5 :Episode 4 Aqua Aqua 2005-10-20 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 5 :Episode 5 Thirst Thirst 2005-10-27 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 5 :Episode 6 Exposed Exposed 2005-11-03 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 5 :Episode 7 Splinter Splinter 2005-11-10 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 5 :Episode 8 Solitude Solitude 2005-11-17 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 5 :Episode 9 Lexmas Lexmas 2005-12-08 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 5 :Episode 10 Fanatic Fanatic 2006-01-12 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 5 :Episode 11 Lockdown Lockdown 2006-01-19 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 5 :Episode 12 Reckoning Reckoning 2006-01-26 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 5 :Episode 13 Vengeance Vengeance 2006-02-02 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 5 :Episode 14 Tomb Tomb 2006-02-09 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 5 :Episode 15 Cyborg Cyborg 2006-02-16 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 5 :Episode 16 Hypnotic Hypnotic 2006-03-30 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 5 :Episode 17 Void Void 2006-04-06 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 5 :Episode 18 Fragile Fragile 2006-04-13 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 5 :Episode 19 Mercy Mercy 2006-04-20 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark... Smallville Season 5 :Episode 20 Fade Fade 2006-04-27 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 5 :Episode 21 Oracle Oracle 2006-05-04 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 5 :Episode 22 Vessel Vessel 2006-05-11 The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark...