[Powers] plays twin sisters, one smokes the other doesn't. They switch lives. Smoker twin gets to hide to satisfy her urges until she quits, other tries it once and fakes it after. Still, Stephanie looked awesome in a few scenes early in the story.
"Seven scenes for the smoking twin, with three lightings. There's a nice scene where she drags and exhales in front of a mirror and we see it from two angles. In another scene after she's had to quit, she enviously follows Brenda's exhale with her nose as it wafts by her face. Dialogue: 'What I wouldn't give for a cigarette'. Brenda smokes in three scenes, dragging in two of them."
Other references to this movie:
Stefanie Powers - Info - video, Deceptions (1985) (TV), youtube, c. '85
, Allposters.com