They Dare Not Love

GIVE ME THIS DANCE...AND I'LL GLADLY DIE TO SAVE THE MAN YOU BELONG TO!

An Austrian prince flees his homeland when the Nazis take over and settles in London. After meeting a beautiful Austrian émigré who makes him realize his mistake in leaving, he strikes a deal with the Nazis to return in exchange for some Austrian prisoners, but quickly discovers that the Nazis are not to be trusted.