After the uncharacteristically epic "Les Destinées" and surprisingly cynical "Demonlover", Olivier Assayas got his groove back with the cautiously optimistic "Clean". Granted, the globe-trotting tale gets off to a grim start, but the grace notes gradually begin to accumulate. Corkscrew-coiffed Emily (Hong Kong superstar Maggie Cheung) is the outspoken lover of struggling musician Lee (James Johnston, formerly of Brit band Gallon Drunk). She's also a heroin addict, just like her partner. When he dies from an overdose, she does time for possession, while his Canadian parents, Albrecht (Nick Nolte in a nicely-shaded performance) and Rosemary (Martha Henry), gain custody of son Jay (James Dennis). Upon release, Emily returns to France to find work, stay clean, and earn the right to reclaim her child. Except for Albrecht, no one believes she can pull it off. Worse yet, many hold her responsible for Lee's death. (The echoes of Courtney Love and Yoko Ono can't be coincidental.) A decade has passed since Assayas directed Cheung in the dazzling "Irma Vep". Since that time, they married and divorced, but the professional relationship persists, culminating in a Best Actress award at Cannes for a performance that calls for dialogue in English, French, and Cantonese--even some singing. As suggested by the title, "Clean" is cool and somewhat detached, an effect reinforced by Éric Gautier's crisp cinematography and a soundtrack heavy on early Eno, but it sidesteps the histrionics frequently associated with the recovery film. Featuring Tricky and David Roback (Mazzy Star) as themselves. "--Kathleen C. Fennessy "