Yes the movie Night Crossing also shows very well that there was a lot of suspicion, for example they had to buy the fabric from lots of different places and th

Yes the movie Night Crossing also shows very well that there was a lot of suspicion, for example they had to buy the fabric from lots of different places and this a slipup actually caused them to be ratted out (not sure if this particular part of the story happened to these people in real life too but it was really a thing)