When a charming young man arrives to serve as a private secretary for the eccentric Helene Kiepergass a, he quickly becomes entangled in a series of mysterious events in her house. Amidst the arrival of a suspicious "nephew" from Mexico and a house full of peculiar guests, a romance blossoms between the secretary and the lovely companion Mary. He eventually is able to unmask two confidence tricksters amidst the residents.
Der Privatsekretär
Frau Helene Kiepergass
Dr. Kiesewetter
Mary, die Gesellschafterin
Bert, der 'Neffe' aus Mexiko
Tobias Kiepergass, der Ehegatte
Frau Kiesewetter
Auktionator
Wirtin
Wirt
Gendarm
Ein Bauer
Apotheker
Bürgermeister