In his latest feature, Imposters, he again takes highly romantic material and treats it with cool, mannered detachment. The contrast is fascinating, but the darkly comic subject matter -about a pair of twin brothers, an elusive treasure, and a lot of skullduggery -doesn't justify either the stylized approach or the constant talk that goes along with it, spoken by such talented performers as Charles Ludlam and Ellen McElduss. Rappaport is a director to watch, but he hasn't yet hit his stride