 The Führer will murder your sons too, he will not stop till he has brought sorrow to every home in the world.” Escherich is under pressure from Obergruppenführer Prall to arrest the source or find himself in dire straits.Nearly all those who find the cards turn them in to the Gestapo immediately, terrified they themselves will be discovered having them.Eventually, Escherich finds the postcard writer and his wife, who turn out to be a quiet, working class couple, Otto and Anna Quangel.