Did these shows have the same main cast in both the first and last seasons?
Some went through drastic changes while others stayed exactly the same!

Images: The Everett Collection
It's incredibly difficult to get a show on TV let alone one that becomes successful. It's even harder to keep that successful show consistent from the first season to the last season. Cast changes are common on long-running shows but actor replacements can happen after just one season — or even just a few episodes!
Here are some classic television shows from the 1950s to the '80s. A few stayed virtually the same all the way through while some went through different iterations. Can you guess which series had the same cast for both the first and last seasons?
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Were all four Cleaver family members in both the first and last seasons of Leave it to Beaver?
Image: The Everett Collection
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Were all 11 Waltons in both the first and last seasons?
Image: The Everett Collection
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Were all these first-season cast members there for Gunsmoke's last season?
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Were these four Beverly Hillbillies in both the first and last seasons of the show?
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Were the four main friends on Happy Days all still part of the regular cast for the last season?
Image: The Everett Collection
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Were all nine Brady Bunch actors there from season one to season five?
Image: The Everett Collection
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Here's the first season cast of Mama's Family. Were they all there for the last season?
Image: The Everett Collection
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Were all these actors on My Three Sons in the last season?
Image: The Everett Collection
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Were these three core cast members on The Rifleman in both the first and last seasons?
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Were these first-season Hogan's Heroes actors all in the last season?
Image: The Everett Collection
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Was each member of the Petrie family in both the first and last seasons of The Dick Van Dyke Show?
Image: The Everett Collection
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Were all seven castaways on Gilligan's Island in both the first and last seasons?
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There were six members of the Barkley family in the first season of The Big Valley. Were they all in the last season?
Image: The Everett Collection

Did these shows have the same main cast in both the first and last seasons?
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