Jean Claude Van Damme plays a dual role as Alex and Chad, twins separated at the death of their parents. Chad is raised by a family retainer in Paris, Alex becomes a petty crook in Hong Kong. Seeing a picture of Alex, Chad rejoins him and convinces him that his rival in Hong Kong is also the man who killed their parents. Alex is suspicious of Chad, especially when it comes to his girlfriend.
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| Directing | Vic Armstrong | Action Director |
| Crew | Vic Armstrong | Stunt Coordinator |
| Crew | Vic Armstrong | Martial Arts Choreographer |
| Crew | John Cheung Ng-Long | Martial Arts Choreographer |
| Crew | James Lew | Stunt Coordinator |
| Directing | John Cheung Ng-Long | Action Director |
| Crew | James Lew | Martial Arts Choreographer |
| Crew | John Cheung Ng-Long | Stunt Coordinator |
| Directing | Sheldon Lettich | Director |
| Production | Ashok Amritraj | Producer |
| Writing | Sheldon Lettich | Screenplay |
| Production | Paul Michael Glaser | Producer |
| Editing | Mark Conte | Editor |
| Sound | Arthur Kempel | Original Music Composer |
| Camera | Richard H. Kline | Director of Photography |
| Production | Jean-Claude Van Damme | Producer |
| Production | Moshe Diamant | Executive Producer |
| Writing | Jean-Claude Van Damme | Screenplay |
| Writing | Sheldon Lettich | Screenstory |
| Crew | Dickey Beer | Stunts |
| Writing | Jean-Claude Van Damme | Screenstory |
| Crew | Bill M. Ryusaki | Stunts |
| Crew | Georges Bejue | Stunt Double |
| Writing | Steve Meerson | Screenstory |
| Crew | Danny Wong | Stunts |
| Crew | Will Leong | Stunts |
| Crew | Darryl Chan | Stunts |
| Crew | James Lew | Stunts |
| Crew | Simon Rhee | Stunts |
| Crew | Peter Lai | Stunts |
| Crew | Mark Stefanich | Stunt Double |
| Crew | Vernon Rieta | Stunts |
| Crew | Al Leong | Stunts |
| Crew | Jordi Casares | Stunts |
| Writing | Peter Krikes | Screenstory |
| Costume & Make-Up | Joseph A. Porro | Costume Design |
| Production | Charles Layton | Executive Producer |
| Art | John Jay Moore | Production Design |
| Production | James F. Tarzia | Casting |
| Production | Terry Carr | Co-Producer |
| Production | Michael Douglas | Co-Producer |
| Art | Suzette Sheets | Set Decoration |
| Costume & Make-Up | Joseph A. Porro | Costume Designer |
| Art | Okowita | Art Direction |
| Writing | Steve Meerson | Story |
| Sound | Allen L. Stone | Sound Re-Recording Mixer |
| Writing | Jean-Claude Van Damme | Story |
| Costume & Make-Up | Janice Alexander | Hairstylist |
| Writing | Peter Krikes | Story |
| Production | Sheldon Lettich | Co-Producer |
| Production | Avram Butch Kaplan | Executive In Charge Of Production |
| Production | Charles Wang | Associate Producer |
| Production | Rick Nathanson | Supervising Producer |
| Writing | Sheldon Lettich | Story |
| Costume & Make-Up | Zoltan Elek | Makeup Artist |
| Production | Kamel Krifa | Associate Producer |
| Sound | Robert Waxman | Sound Effects Editor |
| Sound | Jerry Stanford | Sound Effects Editor |
| Camera | Dan Kneece | Steadicam Operator |
| Sound | Itzhak Magal | Production Sound Mixer |
| Camera | Richard Merryman | Camera Operator |
| Camera | Kirk Bloom | Second Assistant Camera |
| Costume & Make-Up | Katalin Elek | Assistant Makeup Artist |
| Directing | Vic Armstrong | Second Unit Director |
| Sound | Stephen Bushelman | Sound Effects Editor |
| Art | Michael Vojvoda | Set Dresser |
| Sound | Sam F. Shaw | Sound Effects Editor |
| Art | Lars Petersen | Construction Coordinator |
| Directing | James Lansbury | Second Assistant Director |
| Directing | Thomas J. Mack | First Assistant Director |
| Sound | Robert Thirlwell | Sound Re-Recording Mixer |
| Camera | Jeff Mart | Steadicam Operator |
| Camera | Michael Gfelner | First Assistant Camera |
| Lighting | Raymond Gonzales | Electrician |
| Editing | David Orr | Color Timer |
| Lighting | Robert Eyslee | Gaffer |
| Costume & Make-Up | Karen Asano-Myers | Assistant Hairstylist |
| Camera | Howard Wexler | Additional Camera |
| Directing | Andy Armstrong | Second Unit Director |
| Art | Gae S. Buckley | Assistant Art Director |
| Sound | Patrick Cyccone Jr. | Sound Re-Recording Mixer |
| Sound | Craig S. Jaeger | Sound Effects Editor |
| Camera | Peter Jensen | Steadicam Operator |
| Camera | Raymond Lam Fai-Tai | Steadicam Operator |
| Camera | Jürg V. Walther | Camera Operator |
| Lighting | Jesse Mather | Best Boy Electric |
| Crew | Arthur Wai Kit Lau | Special Effects |
| Camera | Cliff Lipson | Still Photographer |
| Camera | Picha Srisansanee | Second Assistant Camera |
| Camera | Ruurd M. Fenenga | First Assistant Camera |
| Production | Brad Arensman | Executive In Charge Of Post Production |
| Camera | Todd Dos Reis | Second Assistant Camera |
| Crew | Jean-Claude Van Damme | Fight Choreographer |
| Directing | Elizabeth S. Barton | Script Supervisor |
| Crew | Peter Malota | Stunts |
| Crew | Peter Malota | Martial Arts Choreographer |
