Yes, David Tennant is one of my favorite actors- and he's wonderfully cast here. But the movie has strong direction so the supporting characters also gain true sympathy and increase the emotional depth. Especially Marcin and Miroslaw are strong supporting actors. I love finding new actors from other countries. Thank you for making a film that shows the efforts that so many determined people made during WW2 by working together. I don't want to share spoilers as that would reduce the impact.