Smallville 5x1 Arrival Season 5 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 5x1 - Arrival 5x2 - Mortal 5x3 - Hidden 5x4 - Aqua 5x5 - Thirst 5x6 - Exposed 5x7 - Splinter 5x8 - Solitude 5x9 - Lexmas 5x10 - Fanatic 5x11 - Lockdown 5x12 - Reckoning 5x13 - Vengeance 5x14 - Tomb 5x15 - Cyborg 5x16 - Hypnotic 5x17 - Void 5x18 - Fragile 5x19 - Mercy 5x20 - Fade 5x21 - Oracle 5x22 - Vessel Lana greets two new Kryptonian arrivals from the ship, Nam-Ek and Aethyr, and their presence poses a grave danger to Clark and his family & friends.