Gregory Sierra and Betty Riehl have appeared together in 1 film in 1981. Every shared film with year, roles and gross, plus who else each works with most.
| Year | Film | Box office |
|---|---|---|
| 1981 | 300 Miles for Stephanie |
Gregory Sierra also often with: Lloyd Bridges (3), Matt Clark (3), Stuart Rosenberg (3), Andreas Katsulas (2), Anthony Zerbe (2)
Betty Riehl also often with: Caesar Cordova (1), Clyde Ware (1), Edward James Olmos (1), Francisco Paco Vela (1), Janet Sunderland (1)