| Cast overview, first billed only: | |||
| Jean-Claude Van Damme | ... | Alex / Chad Wagner | |
| Geoffrey Lewis | ... | Frank Avery | |
| Alonna Shaw | ... | Danielle Wilde | |
| Corinna Everson | ... | Kara | |
| Philip Chan | ... | Raymond Zhang | |
| Alan Scarfe | ... | Nigel Griffith | |
| Bolo Yeung | ... | Moon | |
| Andy Armstrong | ... | Paul Wagner | |
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Wu Fong Lung | ... | Chinese Nurse |
| Peter Malota | ... | Body Guard With Spurs | |
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Sarah-Jane Varley | ... | Katherine Wagner |
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Kamel Krifa | ... | Mah Jong Manager |
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Eugene Choy | ... | Mr. Chen |
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Jack Gilardi Jr. | ... | Karate Student |
| David Lea | ... | Karate Student | |
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. Written by John Vogel <jlvogel@comcast.net>
Double Impact is one of Van Damme`s finest moments on the actionfilm-arena. It delivers what it must to succeed, namely tons of great fighting scenes, which is what Van Damme-movies are all about(well, almost). If you want to rent an old action-flick, Double Impact is one of the best movies Van Damme has ever done! 9/10