Clark confronts Bizarro, the last wraith from the Phantom Zone, but their fight sends a torrent of water rushing toward land; the mysterious young woman reappears at the Kent farm.
A kidnapper from a past case forces the team to confront the consequences of Eric's policy of letting perpetrators go free.
Kyle returns to the Trager household but agonizes over the secrets he must keep from the family; XX journeys outside the walls of Zzyzx.