Step by Step - Season 3 - Eps 10: Sister Act
Karen is interested in Michael, but is too scared to talk to him so she gets Dana to talk to him. Dana talks to him and gets to know him as he gets to know her. He asks her out and she cannot help but say yes. As they get closer, Dana must keep Karen in the dark. The Lambert kids find out by monitoring a telephone call. They convince Karen to start a fight. Karen tells Michael several lies (including the one about Dana only being 14 years old) things about Dana so Michael will dump her. Unfortunately for the Lamberts, Dana and Karen discuss the problem and turn on them instead of each other. In an unprecedented dialogue, Karen tells Dana how she envies her ""book"" smarts, while Dana tells Karen how she envies her ""street"" smarts. Karen and Dana team up to repay the Lamberts for listening in on telephone calls. After Frank refuses to dance with her, Carol ignores him. It is discovered that Frank does not know how to dance. Cody with excellent dancing skills teaches Frank to dance. Frank
About Step by Step

Title: Step by Step
First Air Date: 1991-09-20
Last Air Date: 1998-06-26
Status: Ended
Rating: 7.717/10 (from 392 votes)
Language: EN
Seasons: 7
Total Episodes: 160
Network: ABC
Genres: Comedy, Family
Production Companies: Warner Bros. Television, TyC Sports
Synopsis
Step by Step is an American television sitcom with two single parents, who spontaneously get married after meeting one another during a vacation, resulting in them becoming the heads of a large blended family
Cast

Patrick Duffy
Frank Lambert

Suzanne Somers
Carol Foster Lambert

Brandon Call
J.T. Lambert

Staci Keanan
Dana Foster

Christine Lakin
Alicia Lambert

Angela Watson
Karen Foster

Christopher Castile
Mark Foster

Jason Marsden
Rich Halke

Emily Mae Young
Lilly Foster-Lambert

Alexandra Adi
Samantha Milano