| Actor | Ivan Sergei (as Jimmy Pettit), Kevin Dobson (as Jack Liner), Alan Fudge (as Chief Hunt), Tom Amandes (as Paul Chambers), James Harper (as Charles Pettit), Noah Emmerich (as Officer Ed Hunt), Rodney Rowland (as Doug Pettit) |
| Actress | Kellie Martin (as Katie Liner-Pettit), Linda Kelsey (as Ellen Liner), Kristin Dattilo (as Sharon Liner), Anna Gunn (as Officer Linda Reed), Jennifer Savidge (as Dr. Lois Coutu) |
| Broadcaster | National Broadcasting Company (NBC) |
| Director | Eric Laneuville |
| Production Company | Landsburg Company |
| Links | https://en.wikipedia.org/wiki/If_Someone_Had_Known · https://www.imdb.com/title/tt0113382/?ref_=tt_sims_tt |
Added by MissBabyGirl