All That's fourth season ran from November 15, 1997, to April 4, 1998. 21 episodes aired. The show saw many changes before the start of the season. Original/former cast members Katrina Johnson and Alisa Reyes both had left the show, and former new cast member Tricia Dickson was fired to make room for new cast members. The producers hired Danny Tamberelli, Christy Knowings and Leon Frierson. This would be the final season for Lori Beth Denberg; in a live chat on Nick.com, she reasoned that she left All That, because she "was getting older." Denberg was the last original female cast member on the show before her departure.