| Director: | |
| Tony Wharmby | Director |
| Cast: | |
| Lindsay Wagner | as Katharine Tempest |
| James Brolin | as Victor Mason |
| Victoria Tennant | as Francesca Cunningham Avery |
| Honor Blackman | as Doris Asterman |
| Neil Dickson | as Nick Latimer |
| Richard Johnson | as David Cunningham |
| Leigh Lawson | as Terence Ogden |
| Kathryn Leigh Scott | as Arlene Mason |
| Pip Torrens | as Charles "Kim" Cunningham |
| Stuart Wilson | as Mike Lazarus |
| David Baxt | as Mark Pierce |
| Mona Bruce | as Val |
| Timothy Carlton | as John Harrison-Avery |
| Alistair Findley | as Ossie Edwards |
| Jerry Harte | as Hillard Steed |
| Trudy Weiss | as Estelle |
| Danny Schiller | as Norman |
| Trevor Byfield | as Jerry Massingham |
| Debora Weston | as Estelle Morgan |
| Victor Maddern | as The "Poacher" Spy |
| Dorota Rae | as Yvette |
| Leslie Lyon | as Real Estate Woman |
| David Michael Clarke | as Doctor |
| Lindy Layton | as Young Katherine |
| Demitri Jagger | as Young Mike |
| Cinematography: | |
| Denis Lewiston | Director Of Photography |
| Alan Doberman | Director Of Photography |
| Paul Cave | Camera Focus |
| Jon Gardey | Stills Camera |
| Jim Turrell | Camera Operator |
| Stephen Murray | Assistant Camera |
| Writer: | |
| Rita Lakin | Screenwriter |
| Barbara Taylor Bradford | Novel As Source Material ("Voice Of The Heart") |
| Billie Mayer | Script Supervisor |
| Producer: | |
| Victor Glynn | Producer |
| Aida Young | Producer |
| Robert Bradford | Executive Producer |
| Tom Donald | Executive Producer |
| Ron Purdie | Associate Producer |
| Editing: | |
| John Shirley | Editor |
| Jeremy Child | 2nd Assistant Editor |
| Music: | |
| Alan Parker | Music |
| Larry Richardson | Music Editor Assistant |
| Assistant Direction: | |
| Ken Baker | 1st Assistant Director |
| Peter Bennet | 2nd Assistant Director |
| Marcus Catlin | 3rd Assistant Director |
| Art Director: | |
| Martin Childs | Art Direction |
| Visual Effects: | |
| Dave Beavis | Special Effects |
| Make-Up: | |
| Yvonne Coppard | Makeup |
| Helen Whiting | Makeup Assistant |
| Mark Nelson | Hair |
| Liz Moss | Hair Assistant |
| Costume-Wardrobe: | |
| Evangeline Harrison | Costume Designer |
| Gillian Hebden | Assistant Costume Designer |
| Sue Wain | Wardrobe Mistress |
| Karen Hore | Wardrobe Assistant |
| Helena Speight-Starkey | Wardrobe Assistant |
| Art Department: | |
| Philip Elton | Set Decorator |
| Production Designer: | |
| Tim Harvey | Production Designer |
| Sound: | |
| June Prinz | Sound Assistant |
| Teddy Mason | Sound Editor |
| Paul Le Mare | Sound Mixer |
| Chris Joyce | Assistant Sound Editor |
| Casting: | |
| Rose Tobias Shaw | Casting (United Kingdom) |
| Lynn Kressel | Casting (Usa) |
| Stunts: | |
| Roy Alon | Stunt Coordinator |
| Publicity: | |
| Town House Publicity | Publicity |
| Production Companies: | |
| Portman Film & Television | Production Company |
| Robert Bradford Productions | Production Company |
| Worldvision Enterprises Inc | Domestic Tv Distributor |
| Film Production - Main: | |
| Susan Bowcott | Production Buyer |
| Clive Andrews | Standby Stagehand |
| Ron Purdie | Production Supervisor |
| Liz Bunton | Production Coordinator |
| Pat Howell | Production Accountant |
| David Badger | Boom Operator |
| Larry Randall | Bestboy |
| Tom Brown | Gaffer |
| Peter Hopkins | Camera Grip |
| Film Production - Construction/Set: | |
| Peter Hedges | Chargehand Props |
| Freddie Harrison | Dressing Props |
| Mark Hedges | Chargehand Standby Props |
| Johnny Moore | Standby Props |
| Nick Dewsbury | Chargehand Carpenter |
| Bob Hedges | Property Master |
| Film Production - Lighting/Electrical: | |
| Lee Electric | Lighting |
| Robert Doe-Wansey | Generator Operator |
| Richard Seale | Electrician |
| John Barry | Electrician |
| Billy Nicholson | Electrician |
| Location Manager: | |
| Gladys Pearce | Location Manager (France) |
| Richard Dunmore | Location Manager (United Kingdom) |
| Misc. Crew: | |
| Yvonne Heeks | Production Accountant Assistant |
| Nick Penn | Clapper Loader |
| John Sivers | Corporate Finance |
| Tirzah Lowen | Secretary (To Producers) |
| Hildrey Johnson | Secretary (To Executive Producers) |
| Oliver Riley | Standby Painter |
| Matthew Stillman | Production Runner |
| Roger Cherrils Limited | Post-Production |
| Joe Dunton & Company International, Inc. | Camera Equipment |
| Gse | Titles And Opticals |
|
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