Jennifer Jason Leigh and Jason Patric (After Dark, My Sweet) star as undercover narcotics agents, in a first feature directed by Lili Fini Zanuck from a script by Peter Dexter adapted from a book by Kim Wozencraft. The film addresses a serious subjectundercover agents who become implicated in the drug traffic they’re trying to stopbut while competent, it’s too routine to generate much interest. Leigh is effective as always, but has little to chew on; Patric has even less. With Sam Elliott, Max Perlich, Gregg Allman, Tony Frank, and William Sadler (1991). (JR)