When producers recast small roles, most of us don’t even notice until someone else points it out. Sometimes shows have to recast bigger parts and sometimes they don’t even bother to explain it to their viewers. They just present a new actor in the part and we have to accept it. We have a list of 8 TV shows that recast some pretty big characters and most of them didn’t even bother to explain it.
8. Laurie Forman – That ‘70s Show
Lisa Robin Kelly held the role of Eric’s sister Laurie on That ‘70s Show on and off for five seasons. She made her last appearance on the show during season five and then she was fired because she had a drug and alcohol problem. During season six, Christina Moore took over the role without any sort of explanation and then Laurie was completely written out of the show that same season. During season seven, Laurie is mentioned once and her disappearance is explained as her having moved to Canada.Source: www.cheatsheet.com