Karen Grassle has spoken about her experiences on the set of Little House on the Prairie, revealing tension with costar Michael Landon that led her to separate herself from the show's fans. She has expressed feelings of resentment and anger towards Landon, with some reports suggesting that sexism on set was a factor. The nature and extent of the issues between Grassle and Landon are not entirely clear, but it appears they had a significant impact on Grassle's time on the show.