Der Trauschein

Vicky and Robert are getting married in a week's time. Surely everything would take its normal course if it weren't for this tricky matter of an official document. Robert's mother insists on seeing Vicky's parents' marriage certificate. After all, the son is supposed to marry into an orderly relationship. But it's like a spell. The important document is and remains untraceable. An embarrassing suspicion arises: Was Rudolph and Ella Borchers' marriage perhaps not legally valid?