After Ritter's death, it had slipped to 50th, but was renewed for a third season, in which ABC moved the show to Friday night at pm as part of its TGIF comedy line-up.The series' creator and show-runner, Tracy Gamble, left the series for a time over creative differences prior to the third season, but he later returned as a consulting producer midway through the third season. Even before the third season finale's airing, rumors began circulating that 8 Simple Rules was facing cancellation due to Ritter's death and poor ratings.The finale received a 3.9/8 rating share which gave ABC a third place finish behind NBC's Dateline (5.8/11) and CBS' Joan of Arcadia (4.9/10), which starred Ritter's son, Jason Ritter.Shortly afterwards, ABC officially cancelled 8 Simple Rules in 2005.Bruce Cameron's book 8 Simple Rules for Dating My Teenage Daughter.The rules are: The third season took a creative turn, revolving more around cousin C. and Jim, the grandfather, than the immediate Hennessy family, more specifically not revolving around the raising of the Hennessy girls.
After the novelty of newly added ensemble characters wore off, the series returned to its original format.
Katey Sagal took over the show's starring position for the rest of the series's run.
Veteran actor James Garner and David Spade also joined the show.
8 Simple Rules (originally known as 8 Simple Rules for Dating My Teenage Daughter) is an American sitcom, originally starring John Ritter and Katey Sagal.
It debuted on ABC on September 17, 2002, and concluded on April 15, 2005.
He briefly reprised the role on the spin-off Three's a Crowd, which aired for one season.