Smallville goes #EcoFriendly with a new season trend: Phantom of the Week. After a bizarre murder/kidnapping, Clark finds himself going up against a super hot, plant-controlling alien...from the Phantom Zone. Lex and Lana are fighting over what they're wearing to the Dark Thursday Ball charity event. Lois tries to redeem herself for ruining Martha's meeting with Queen Industries by offering herself to Oliver for the night.

Aaron Ashmore (Killjoys, Locke & Key) special guest stars as recurring season six and original DC Comics character Jimmy Olsen.

Justin Hartley (This Is Us, The Young and the Restless) special guest stars as recurring season six and original DC Comics character Oliver Queen, a.k.a. Green Arrow.

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