This week on "Smallville" the Green Arrow returns and encounters a new superhero, the Black Canary. The two don’t get off to a very nice start, and they get tangled in a terrific fight scene. Justin Hartley stars as the Green Arrow.

On the Feb. 7 episode (8 p.m. ET), Chloe intercepts one of Lex's project files while secretly working for Oliver (Hartley), 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. 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.

Meanwhile, Lois discovers Oliver's secret.

Photos: Michael Courtney/The CW © 2007 The CW Network, LLC. All Rights Reserved.