Under the Dome (9 p.m., CBS) - In the two-hour Season 3 premiere, information about the dome is revealed and residents aren’t sure where to place their trust. New threats emerge and surprising alliances form. Emmy Award winner Marg Helgenberger guest stars as a Chester’s Mill resident with insight into the Dome’s origins, and Eriq La Salle guest stars as the ruthless CEO of the energy company run by Barbie’s father. As with the first two seasons, this season of “Under the Dome” is filmed in and around Wilmington.
Also on tonight . . .
Astronaut Wives Club (8 p.m., ABC) - Louise and Alan bask in the success of Alan’s mission, while Annie struggles with her stutter.
Boom! (8 p.m., Fox) - A new game show in which teams compete to answer questions correctly in order to win money and avoid being soaked in slime.
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Complications (9 p.m., USA) - John visits Antoine’s father in prison to try to disentangle himself from his responsibilities regarding Antoine. And Gretchen’s involvement in the abusive boyfriend situation gets way out of hand.
Rookie Blue (10 p.m., ABC) - Season 6 begins with Andy and Sam returning to work. Then Andy is attacked at Traci’s place and the Sex Crimes Unit tries to take over the case.
Graceland (10 p.m., USA) - Season 3 has agents working on cases and repairing broken relationships.
Hannibal (10 p.m., NBC) - Having survived a disfiguring gunshot, Dr. Fredrick Chilton focuses on using Will as bait to catch Hannibal. By the way, NBC announced this week that the show has been canceled, but they will air all of the remaining episodes in the regular Thursday-at-10 timeslot.
The Comedians (10 p.m., FX) - The first season ends with two new episodes. In the first, Billy overhears Josh and his young friends making fun of him. At 10:30, Billy and Josh consider the future on the last day of shooting their show.