Not to be confused with seminal coin-op game conversion Double Dragon, nor Jean-Claude Van Damme's Double Impact, this 1992 fighting frenzy still requires a martial artiste to stretch thespian muscles as estranged twin brothers.
The Belgian headkicker's diminutive but significantly more entertaining Oriental counterpart plays John Ma and Boomer, siblings unwittingly separated by a post-natal shoot-out at the hospital. So while the former grows up in New York and learns classical arts, the latter is raised on Hong Kong's unforgiving streets and schooled in hard knocks. Their paths are, of course, destined to cross again, and as world-famous conductor and pianist John Ma arrives in China with his orchestra; dodgy mechanic Boomer is up to his ears in strife with the Hong Kong mob.
Needless to say, mistaken identity and culture clash gags are the order of the day, but sadly, given such a rich - if ludicrously contrived - premise, this is (by Chan's own high standards) rather tame chopsocky, lacking Rush Hour's gloss, but also curiously devoid of the charm that defined previous breakneck, limb-whirlers. Appalling dubbing doesn't help the comedy which itself seems suspiciously amateurish, and the split screen effects look like they've warped in direct from the original Star Trek telly series. And to add insult to injury, it's the first Chan film in recent memory which doesn't include closing credit out-takes. Boo.