In the premiere of Doomsday Castle (8 p.m., National Geographic Channel), a rich guy and his adult children prepare for the apocalypse by building a castle. Really.
They take themselves very seriously. Which makes it very easy for viewers to take them considerably less than seriously.
Elsewhere on TV ...
So You Think You Can Dance (7 p.m., Fox/Ch. 13): The remaining 10 contestants perform; two are eliminated.
Whose Line Is It Anyway? (7 p.m., CW/Ch. 30): Guests include Heather Anne Campbell and Lisa Leslie.
Rizzoli & Isles (7 and 9 p.m. TNT): Frankie Jr. is brought in to help with a murder case.
America's Got Talent (8 p.m., NBC/Ch. 5): A dozen acts perform in New York..
Capture (8 p.m., CW/Ch. 30): One team is given an advantage.
Perception (8 and 10 p.m., TNT): Pierce investigates a stabbing at a psychiatric hospital.
Pretty Little Liars (9 p.m., ABC Family): Emily moves into Ali's old room.
Twisted (10 p.m., ABC Family): Regina's mother wants to have Danny expelled.
Who Do You Think You Are? (10 p.m., TLC): Zooey Deschanel learns about her family history.
Covert Affairs (10 p.m., USA): Annie is sent to Vienna.
Suits (11 p.m., USA): Harvey and Stephen work on Ava's case.
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