It's online in short segments at youtube, and those parts should autoplay from here: (5/8/2010: that's gone now.)
AMCTV has an overview, as does TCM. The New York Times says,
as melodrama, sheer and simple, the story behind Anna Holm's murder trial is often superbly effective, but when it attempts to become a study of emotional anguish it merely betrays the essential hokum of which the film is constructed.
For the story basically is no more than a good old-fashioned thriller which makes use of most of the tricks of the old ten, twent' thirt'—the mad villain, the chase on sleights to save an abducted child, the letter which at the last moment whitewashes the accused.
5/8/2010: The Evening Class has an article.
9/17/2011: Great Old Movies calls it "Absorbing and first-class all the way."