Step by Step is an American television sitcom which aired on ABC as part of their TGIF lineup from September 20, 1991, to August 15, 1997, with a network change to CBS from September 19, 1997 to June 26, 1998. The series starred Patrick Duffy and Suzanne Somers as the heads of a large stepfamily. Set in Port Washington, Wisconsin, Frank Lambert, a divorced contractor with 3 children, sons J.T. and Brendan and daughter Al, impulsively marries Carol Foster, a widowed beautician who also has 3 children, daughters Dana and Karen and son Mark. Both were residents of Port Washington, but met while vacationing separately in Jamaica. Their children are surprised and angered when they learn of the marriage. Stories depicted typical situations of a new blended family, their differences causing arguments and resentments between them, but the family eventually growing to tolerate and develop loyalty to one another.