James Marsters and Tom Welling, <EM>Smallville</EM>;<EM> </EM>Jensen Ackles and Jared Padalecki, <EM>Supernatural</EM> James Marsters and Tom Welling, Smallville; Jensen Ackles and Jared Padalecki, Supernatural
Two favorite sci-fi series are back tonight with all-new episodes. Get a sneak peak at what you can expect from Smallville and Supernatural

with our handy preview!

Smallville (tonight at 8 pm/ET, CW)
Six new episodes are left, more than enough time for Clark (Tom Welling) to escape from the Fortress of Solitude, where Bizarro imprisoned him before posing as Clark. Bizarro crosses paths with another Kryptonian villain, Brainiac (James Marsters), who has returned from apparent death. "Clark will have to deal with Brainiac's deadly new plan for the House of El," says executive producer Al Gough. On the "good guys" side, Green Arrow (Justin Hartley), last seen a year ago forming the Justice League, shows up again, just in time to tangle with the Black Canary (Alaina Huffman). The fan-favorite comic-book heroine will initially be on the opposite side of the law, working for Lex Luthor (Michael Rosenbaum). Speaking of Lex, Gough says to expect "new secrets from the Luthors that have deadly consequences for everyone." And in the March 27 episode — which could be the season finale if the writers' strike continues — look for major reve­lations concerning the show's mythology. Teases Gough: "Ev­erything changes after Episode 15, and Smallville will never be the same again."

Supernatural (tonight at 9 pm/ET, CW)
Thanks to the writers' strike, demon-hunting brothers Sam and Dean Winchester (Jared Padalecki and Jensen Ackles) have just four episodes left. When the show returns, Dean's devil-may-care attitude about his impending date with hell finally changes. "Something big happens to him that makes him realize he desperately wants to live and he desper­ately doesn't want to go to hell," says exec pro­ducer Eric Kripke. In the meantime, the boys go "dream walking in other people's dreams," according to Kripke. "The action takes place inside these dreams, and you really get to see the inner lives of the characters." We'll also learn how sexy hunter Ruby (Katie Cassidy) became part demon; Kripke hints that "something surpris­ing" about her will be revealed. There's more pain when Agent Henricksen (Charles Malik Whitfield) catches up with the boys in a cli­mactic showdown. And in the last episode of this batch, Dean dies hundreds of times, Groundhog Day-style, at least in the mind of Sam. "It's actually quite funny," Kripke says. Only on Supernatural.

Catch up on Supernatural with full episodes in our Online Video Guide.

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