Friday on TV ...
Crossbones (9 p.m., NBC/Ch. 5): Balfour forms an unlikely alliance that could cost him and Lowe their lives.
Saturday on TV ...
Lee Daniels' The Butler (8 p.m., Showtime): 2013 film about a White House butler who served eight presidents over a 30-year career. (PG-13)
Power (10 p.m., Starz): Angela has a member of Ruiz's gang wired as Tommy makes peace with him.
Sunday on TV ...
Big Brother (7 p.m., CBS/Ch. 2): Nominations for eviction are revealed.
Rising Star (7 p.m., ABC/Ch. 4): The final round of duels.
Last Tango in Halifax (7 p.m., PBS/Ch. 7): Alan learns that Kate is pregnant.
The Musketeers (7 p.m., BBC America): Aramis and d'Artagnan escort a young woman and her baby to the palace and protect them from kidnappers.
The Witches of East End (7 and 9 p.m., Lifetime): Frederick's old friends from Asgard make an unwelcome visit.
The Last Ship (7 and 9 p.m., TNT): Panic spreads when Danny Green catches a mysterious illness that might be the virus.
Unforgettable (8 p.m., CBS/Ch. 2): A Coast Guard officer is murdered.
Masterpiece Mystery! (8 p.m., PBS/Ch. 7): "Poirot" returns with "The Big Four."
Halt and Catch Fire (8 and 9 p.m., AMC): Complications threaten to derail the Cardiff Electric team's work at COMDEX.
The Lottery (8 p.m., Lifetime): Vanessa, Darius and the president's advisors debate the next steps of the lottery.
Falling Skies (8 and 10 p.m., TNT): Tom reunites with his family and the 2nd Mass.
Reckless (9 p.m., CBS/Ch. 2): Jamie asks Roy for help when she works to clear the name of a pro bono client wrongfully accused of murder.
Vicious (9:30 p.m., PBS/Ch. 7): Freddie and Stuart host a dinner for Ash and his new girlfriend.
True Blood (10 p.m., HBO): Sookie makes a startling discovery.
Ray Donovan (10 p.m., Showtime): Ray and Abby try to get Bridget into her dream school.
The Strain (11 p.m., FX): Eph and Nora fight to save Captain Redfern's life.
The Leftovers (11 p.m., HBO): A vicious hate crime tests Laurie's resolve.
Masters of Sex (11 p.m., Showtime): Virginia learns about Masters' troubled childhood.