"Double Impact" (citywide) offers two Jean-Claude Van Dammes for the price of one, and for fans of the Belgian-born martial arts star, it delivers the goods. It's a solid, fast-moving action-adventure set largely in Hong Kong, which is dynamically photographed by Richard Kline.
Written by Van Damme with director Sheldon Lettich, the plot is elementary but serviceable. Back in 1966, a couple of bad guys (Alan Scarfe, Philip Chan Yan Kin) assassinate a British entrepreneur and his wife in Hong Kong, but their twin sons survive. One of them, Chad, is rescued by the father's loyal, avuncular associate (Geoffrey Lewis), who raises the boy in France; the other, Alex, is taken by his nanny to a Hong Kong orphanage, left in the care of a nun with a decided French accent. So much for explaining away Van Damme's own accent.
Twenty-five years later, Chad gets a line on Alex, who's become a rough-tough Hong Kong smuggler while Chad lives the good life as a popular Beverly Hills aerobics instructor. Predictably, Chad and Alex don't hit it off initially but join forces to avenge their parents' deaths.
In the writing and in Van Damme's playing, Chad and Alex are sharply, believably defined as two distinct individuals. The dual role offers Van Damme a stretch as an actor, but wisely he and his associates don't let thespic demands get in the way of slam-bang action.