Despite having some talent and material to work with, this feature produces just a few good moments, and it never really comes together the way it might have. The cast, headed by Ginger Rogers and including some fine supporting actors, certainly supplied plenty of talent. The story idea was only mildly imaginative, but it had the potential for some decent comedy and entertaining romantic mix-ups. But it seems to go in too many different directions at different times, and perhaps as a result, it has a few stretches of good material packed amidst some longer, less interesting parts.
Rogers was easily one of the more attractive and talented actresses of her era, but the role of Arlette just doesn't seem to work for her. The character is not really as interesting as the situation, and Rogers often seems to be trying too hard. In any case, the character never quite rings true.
The story starts with Arlette, a reluctant enrollee in a school for petty criminals, getting roped into a scheme by an unscrupulous aristocrat that plunges her into a series of romantic and personal complications, as she develops a tangled relationship with a diplomat played by Jean-Pierre Aumont. The story is pure fluff, deliberately implausible but with some good possibilities, and it would likely have worked better with a lighter, more farcical touch all around.
Basil Rathbone is well cast as the 'professor' at the crime school, and there are some amusing details in his classes and teaching methods, but all of the sequences in the 'school' are essentially just elaborations on the basic gag idea. Adolphe Menjou was an ideal choice for the unprincipled nobleman, but he has to contend with some clunky dialogue in his part. For all of these and other reasons, "Heartbeat" - though probably worth seeing - never hits its stride, and it delivers less than it could have.