Caviare, pink caviar anyway, begins when Ben Freeman, then very young, is introduced to one of those sometime girls during WW II who has exotic Russian-Finnish parents, an atomic scientist father, a gifted musician mother, and caviar--the real thing. Leila, one of those girls who can be had but not possessed, eventually goes off to Russia with one of her father's students who defects with his research secrets. Ben marries the first replacement but is always just a little in love with Leila until he connects with her years later before she disappears for good. Smith has written other lighter romances along this order; they pass the time that was and is, attractively, in a reprise of memory, desire, regret.