Smallville 1x4 X-Ray Season 1 Season 0 0 EpisodesSeason 1 21 EpisodesSeason 2 23 EpisodesSeason 3 22 EpisodesSeason 4 22 EpisodesSeason 5 22 EpisodesSeason 6 22 EpisodesSeason 7 20 EpisodesSeason 8 22 EpisodesSeason 9 21 EpisodesSeason 10 21 Episodes 1x1 - Pilot 1x2 - Metamorphosis 1x3 - Hothead 1x4 - X-Ray 1x5 - Cool 1x6 - Hourglass 1x7 - Craving 1x8 - Jitters 1x9 - Rogue 1x10 - Shimmer 1x11 - Hug 1x12 - Leech 1x13 - Kinetic 1x14 - Zero 1x15 - Nicodemus 1x16 - Stray 1x17 - Reaper 1x18 - Drone 1x19 - Crush 1x20 - Obscura 1x21 - Tempest Clark begins experiencing "vision problems" as his x-ray vision begins manifesting. Meanwhile a mysterious shapeshifter is going about town using his or her abilities to steal and get others in trouble.