An American foreign exchange student in Ireland, Rich Evans (Kurt Russell), gets caught up in espionage when a dying man gives him a message to pass to his older brother, who is an American intelligence agent unbeknownst to Rich. Rich and his friend are then kidnapped by an Eastern Bloc agent pretending to be from the American Embassy in the hopes that they will lead him to a scientist who is attempting to defect to the West. Originally aired in 3 parts on 'Walt Disney's Wonderful World of Color' TV series, then re-edited into a theatrical feature in Europe under the title, 'The Secret of Boyne Castle.'
| Production | Ron Miller | Producer |
| Directing | Robert Butler | Director |
| Writing | Herman Groves | Writer |
| Writing | Lockhart Amerman | Novel |
| Production | Hugh Attwooll | Associate Producer |
| Sound | Buddy Baker | Original Music Composer |
| Camera | Michael Reed | Director of Photography |
| Editing | Peter Boita | Editor |
| Production | Maude Spector | Casting |
| Art | Albert Witherick | Art Direction |
| Costume & Make-Up | Beatrice Dawson | Costume Design |
| Costume & Make-Up | Harry Frampton | Makeup Artist |
| Costume & Make-Up | Eileen Warwick | Hairstylist |
| Production | Peter Crowhurst | Production Manager |
| Directing | Dickie Bamber | Second Assistant Director |
| Directing | Barrie Melrose | Assistant Director |
| Directing | Bill Westley | Third Assistant Director |
| Art | Terry Wells Sr. | Property Master |
| Sound | Ken Barker | Sound Recordist |
| Sound | Keith Batten | Boom Operator |
| Sound | Christopher Lancaster | Sound Editor |
| Sound | David Price | Sound Recordist |
| Crew | Dick Warlock | Stunt Double |
| Lighting | Bob Bremner | Lighting Technician |
| Lighting | Nobby Cross | Gaffer |
| Camera | Alec Mills | Camera Operator |
| Camera | Ray Sturgess | Additional Photography |
| Production | Robin Douet | Location Manager |
| Sound | Franklyn Marks | Orchestrator |
| Sound | Eric Rogers | Conductor |
| Directing | Tilly Day | Continuity |
