Step by Step is an
American television
sitcom that aired for seven seasons, originally running on
ABC as part of its
TGIF Friday night lineup from September 20, 1991, to August 15, 1997, and then
moved to
CBS where it aired from September 19, 1997 to June 26, 1998. The series starred
Patrick Duffy and
Suzanne Somers as two single parents (each with three children), who spontaneously get married after meeting one another during a vacation, resulting in the two of them becoming the heads of a large
blended family.