Jessica Alba’s many fans won’t mind if they seem to be seeing double on tonight’s “Dark Angel” (8 p.m., Fox) when Max is stalked by her own clone. While this stylish series has made Alba a star, Fox has to be disappointed with its less than stellar ratings. Factor that in with the action drama’s expensive production costs, and the prospects for the show’s third season seem slim.

But if “Dark Angel” does not get renewed, it will end with a bang. Series creator and Academy Award winner James Cameron (“Titanic”) will make his television directing debut with the 90-minute “Dark Angel” season finale May 3. (The fact that this series is signing off so early in the May Sweeps period is another strong hint that it’s future is in doubt.) In the extended episode, titled “Freak Nation,” Max will reveal her true nature to the world and Logan (Michael Weatherly) will aid her in leading a mutant resistance against an increasingly intolerant human society.

“Taxi” star Marilu Henner returns to primetime on “Providence” (7:30 p.m., NBC). She guest- stars as an animal loving free-spirit who flirts with Jim (Mike Farrell) when she brings her ailing orangutan to his veterinary clinic. In addition to appearing in many television movies, Henner also starred in the 1990-94 CBS sitcom “Evening Shade” and served as the executive producer on the short-lived Fox comedy “Medicine Ball.”

“Vegas Rat Pack” (5 p.m., TLC) is certainly not the first documentary to chronicle Frank Sinatra’s fabled gang of swingin’ sidekicks and probably won’t be the last. “Pack” includes scenes of Sinatra hanging out with pals Sammy Davis Jr., Dean Martin, Peter Lawford, Joey Bishop and others, and rare footage of a series of 1960 concerts from the Sands Hotel in Las Vegas. With typical swagger, Sinatra called these shows, and the parties that accompanied them, “The Summit — A Conference of Cool.” “Rat Pack” also shows Sinatra’s business savvy and demonstrates how he assembled a show business empire that included his own record company, a television and film production company and two casinos.

Not even the combined star power of Tom Cruise and Brad Pitt could rescue the 1994 adaptation of Ann Rice’s “Interview with the Vampire” (9:30 p.m., TBS) from its plodding pace. For all of its advance hype and controversy, the film is best remembered for being the screen debut of Kirsten Dunst.

Tonight’s other highlights

Rene Russo and Dustin Hoffman star in the 1995 medical thriller “Outbreak” (7 p.m., UPN).

The crisis in the Catholic Church is scheduled on “Dateline” (8 p.m., NBC)

Molly reluctantly enters a local pageant “Maybe it’s Me” (8:30 p.m., WB). Morgan Fairchild guest stars as a former beauty queen.

Scheduled on “48 Hours” (9 p.m., CBS): a cop from Evansville, Ill., is accused of murdering his girlfriend.

Amy Irving guests stars as the mother of a teen who recalls being molested by her father on “Law & Order: Special Victims Unit” (9 p.m., NBC).

Scheduled on “20/20” (8 p.m., ABC): hermaphrodite babies; posthumous pet preservation; unhappy homeowners.

Cult choice

Jean Smart portrays a true life female Florida serial killer in the 1992 drama “Overkill: The Aileen Wuornos Story” (8 p.m., Lifetime).

Series notes

Rain washes away evidence of a fatal car-jacking on “CSI” (7 p.m., CBS) … Eric and Donna have a non-date at the Pricemart Ball on “That ’70s Show” 7 p.m., Fox) … Tom Bergeron hosts “America’s Funniest Home Videos” (7 p.m., ABC) … Zelda’s ancient resume catches up with her on “Sabrina, the Teenage Witch” (7 p.m., WB).