HBO's vampire series is a bloody mess - literally. True Blood (Sunday, 10 p.m., HBO) is swimming in faux plasma. And the convoluted plotlines have traveled far from Charlaine Harris' books. As Season 6 begins, Bill is resurrected; Sookie and Jason's fairy grandpa shows up; and vampires and humans are at each other's throats. If you aren't already a fan, you'll be totally lost.Friday on TV ...Dateline (7 p.m., NBC/Ch. 5): A young sister and brother are torn apart when their mother disappear.Continuum (8 and 10 p.m., Syfy): Kiera and Carlos try to stop Liber8's plan to hijack a prison transfer.20/20 (9 p.m., ABC/Ch. 4): A report on unusual and controversial parenting styles.Rock Center (9 p.m., NBC/Ch. 5): A report on robotic surgery.Magic City (10 p.m., Starz): As Season 2 gets under way, Ike is in jail on a murder charge.Saturday on TV ...Golf (10 a.m., NBC/Ch. 5): Third round of the U.S. OpenStanley Cup Finals (6 p.m., NBCSN): Game 2 - Boston Bruins at Chicago BlackhawksZero Hour (7 and 8 p.m., Ch. 4): ABC burns off a couple episodes of this canceled series.AFL (7 p.m., CBS Sports Network): Jacksonville Sharks at Utah BlazeAFI Life Achievement Award: A Tribute to Mel Brooks (7 and 8:30 p.m., TNT): The American Film Institute honors Brooks.Ron White: A Little Unprofessional (8 p.m., CMT): White performs his standup comedy act.Hannibal (midnight, Ch. 30): The teams finds evidence linking Abigail to the Minnesota Shrike victims.Sunday on TV ...Golf (10 a.m., NBC/Ch. 5): Final round of the U.S. OpenNBA Finals (6 p.m., ABC/Ch. 4): Game 5 - Miami Heat at San Antonio Spurs (if necessary)Daytime Emmy Awards (6 p.m., HLN): Live from Los Angeles.Falling Skies (8 and 9 p.m., TNT): The 2-year anniversary of the alien invasion approaches.The Killing (7, 9:05 and 11:10 p.m., AMC): Sarah and Holder unite in their pursuit of ''the voice."Miss USA Competition (8 p.m., NBC/Ch. 5): Donald Trump owns this cultural anachronism - which is one more reason not to watch it.Masterpiece Mystery! (8 p.m., PBS/Ch. 7): Inspector Lewis returns and investigates the murder of a psychic. (Shouldn't a psychic have seen it coming?)Mad Men (8 and 10:05 p.m., AMC): The partners are at loggerheads.The Client List (7 p.m., Lifetime): Riley discovers the client list has been stolen.Nurse Jackie (10 p.m., Showtime): Jackie finally hits her one-year anniversary of sobriety, but is it a cause for celebration? (Season finale)Veep (11 p.m., HBO): Selina is told to limit her public appearances.The Borgias (11 p.m., Showtime): The Borgias make a move against their enemies.(Series finale)Family Tree (11:30 p.m., HBO): Tom travels to California to stay with his American cousins.