| Cast |
| Ken Olin | .... | Michael Steadman |
| Mel Harris | .... | Hope Murdoch Steadman |
| Timothy Busfield | .... | Elliot Weston |
| Patricia Wettig | .... | Nancy Krigger Weston |
| Luke Rossi | .... | Ethan Weston |
| Melanie Mayron | .... | Melissa Steadman |
| Polly Draper | .... | Ellyn Warren |
| Peter Horton | .... | Prof. Gary Shepherd |
| rest of cast listed alphabetically |
| Erich Anderson | .... | Billy Sidel (1990-1991) |
| David Clennon | .... | Miles Drentell (1989-1991) |
| Brittany Craven | .... | Janey Steadman (pilot only - Jade Mortimer) |
| Lacey Craven | .... | Janey Steadman |
| RaeAnn Emery | .... | Miles Drentel's Assistant (1988-1989) |
| Richard Gilliland | .... | Jeffrey Milgrom (1988-1989) |
| Patricia Kalember | .... | Susannah Hart Shepherd (1989-1991) |
| Terry Kinney | .... | Steve Woodman (1987-1988) |
| Felicity LaFortune | .... | Valerie Milgrom (1988) |
| Andra Millian | .... | Angel Wasserman (1989-1991) |
| Corey Parker | .... | Lee Owens (1989-1991) |
| Lyndsay Riddell | .... | Brittany Weston #2 (1990-1991) |
| Jordana Bink Shapiro | .... | Brittany Weston #1 (1987-1990) |
| Pamela Clay | .... | (unknown) |
