Watch Smallville Season 7 Episode 11 Siren

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You see, this is the official description for Siren.

THE GREEN ARROW AND BLACK CANARY BATTLE IN SMALLVILLE

While secretly working for Oliver (guest star Justin Hartley), Chloe (Allison Mack) intercepts one of Lex's (Michael Rosenbaum) project files, but she is attacked by the Black Canary (guest star Alaina Huffman), a mystery woman with a subsonic cry. Dinah Lance, Black Canary's alter ego, is a conservative talk show host who is working at the Daily Planet and clashes with Lois (Erica Durance).

Lex convinces the Black Canary that the Green Arrow and his team are terrorists so she launches an attack on the Green Arrow and Clark (Tom Welling). Meanwhile, Lois discovers Oliver's secret. Kristin Kreuk, Aaron Ashmore, Laura Vandervoort and John Glover also star. Kevin Fair directed the episode written by Brian Peterson & Kelly Souders (#3T6311).