There are obviously some MASSIVE spoilers ahead!

And #5 mentions pregnancy loss.

Then, they were never seen again.

Two scenes from a TV show featuring actors on set, one walking with a child and another standing with open arms

It was a heartbreaking death that was later reversed when she came back alive in Season 4.

This led to the youngest Winslow daughter, Judy, disappearing one day as if she never existed.

People often joke that Judy went upstairs one day, and never returned.

Three stills from "Prison Break" featuring Wentworth Miller as Michael Scofield and Sarah Wayne Callies as Sara Tancredi in emotional scenes

The writers made the choice toreverseher character’s pregnancy storyline on the show following the news.

6.InThe Vampire DiariesSeason 1, Stefan is the first Salvatore brother Elena meets in Mystic Falls.

When the series was rebooted in 2018, the show decided to make it so Dan was still alive.

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9.WhenHappy Daysbegan, Richie originally had an older brother named Chuck.

He appeared in the first two seasons of the series before just disappearing as if he never existed.

In his place, Fonzie became a bigger character and acted as an older, brother-like figure for Richie.

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However, when Season 2 began, Mandy was gone.

It’s also assumed that Jason Blossom, Cheryl’s twin, is older than the other main characters.

12.In Season 8 ofCheers, Frasier mentions that his dad was a scientist and is dead.

TV show "Married with Children" cast in different scenes, including characters Peg, Al, Kelly, and Bud Bundy

13.And finally, inDallas, Bobby tragically died in the Season 8 finale while saving Pam.

Nicknamed “The Dream Season,” it remains one of the biggest retcons on TV.

Three separate images from a TV show featuring characters Stefan Salvatore, Elena Gilbert, and Damon Salvatore in a tense scene

Two scenes from a TV show featuring Roseanne Conner in casual clothing, sitting indoors and lying beside a character in a hospital bed

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Two scenes from a TV show featuring the same actress in different conversations

Two images: Top shows a smiling woman in judicial robes, bottom depicts the same individual in a graduation cap and gown

Scene from TV show Cheers with characters Sam, Norm, Cliff at the bar and Frasier on a couch

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