This weekend on TV: Who's that mysterious woman on "Dexter"?

If you thought there was more than there might have appeared to the mysterious Dr. Vogel (Charlotte Rampling) on last week's eighth-and-final season premiere of Dexter (Sunday, 10 p.m., Showtime), you were absolutely right.And you'll get the answers about who she is this week.Friday on TV ...Triple A baseball (7 p.m., Ch. 14): Tacoma Raineers at Salt Lake BeesThe Cleveland Orchestra in Performance (8 p.m., PBS/Ch. 7): Pierre Boulez conducts the orchestra's performance celebrating the life of composer Gustav Mahler.Continuum (8 and 10 p.m., Syfy): Kiera has an emotional breakdown.20/20 (9 p.m., ABC/Ch. 4): A report on sports stars gone wild.Saturday on TV ...Zero Hour (7 p.m., ABC/Ch. 4): ABC burns off an episode of this canceled show. Laila and Hank go on the run.Arena Football (7 p.m., Channel 14): New Orleans VooDoo at Utah BlazeBrooklyn D.A. (8 p.m., CBS/Ch. 2): Prosecutors say a man in prison for more than two decades is innocent.666 Park Avenue (8 p.m., ABC/Ch. 4): ABC burns off an episode of this canceled show. Henry hunts for Jane's father.Do No Harm (9 p.m., NBC/Ch. 5): NBC burns off another episode of the canceled show. Jason makes a deal with Ian.Sunday on TV ...Big Brother (7 p.m., CBS/Ch. 2): Someone is evicted.Celebrity Wife Swap (7 p.m., ABC/Ch. 4): Actress Nia Peeples and former pop star Tiffany trade lives.Secrets of Althorp: The Spencers (7 p.m., PBS/Ch. 7): Earl Charles Spencer gives a personal tour of Althorp, the childhood home of Princess Diana.The Killing (7, 8 and 9 p.m., AMC): Sarah and Holder get a break in the case.Drop Dead Diva (7 and 11 p.m., Lifetime): Holy irony - Jane represents a jilted bride.Masterpiece Mystery! (8 p.m., PBS/Ch. 7): Endeavour investigates the sudden death of a young secretarial student.Copper (8 and 11 p.m., BBC America): Corcoran has a big choice to make.Devious Maids (8 and 10 p.m., Lifetime): Michael's ex drops a bomb about Taylor's past.Falling Skies (8 and 9 p.m., TNT): Hal reveals his internal struggle.Crossing Lines (9 p.m., NBC/Ch. 5): An abandoned car leads Sebastian and the team to Poland.True Blood (10 p.m,. HBO): Eric battles the governor's anti-vampire initiatives.Dexter (10 p.m., Showtime): Dr. Vogel comes to Dexter for help.Family Tree (11 p.m., HBO): Tom meets a distant cousin. (Season finale)Ray Donovan (11 p.m., Showtime): Ray tries to find a way to send his father back to prison.