this be a great example of film noir and a every scene have some sort of shadow pattern on the wall and the floor and the face . all shot be do with key light on the face . the pattern suggest jail and lock up and flight ( a in a train track ) and trap and ( a in a cobweb ) and and others . there isn not one scene that doesn not have a shadow in it . even the day time sequence . and the actor that have great career represent stanwyck and gary merrill and claude akins and even jesse ( the original maytag repairman ) white and and and of course and george sander and who play a denazified ex nazi . whew . great stuff .