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.
| Actor | Role |
|---|---|
 Gustav FröhlichDer Privatsekretär | Der Privatsekretär |
 Fita BenkhoffFrau Helene Kiepergass | Frau Helene Kiepergass |
 Theo LingenDr. Kiesewetter | Dr. Kiesewetter |
 Maria AndergastMary, die Gesellschafterin | Mary, die Gesellschafterin |
 Rudolf CarlBert, der 'Neffe' aus Mexiko | Bert, der 'Neffe' aus Mexiko |
| PPaul HenckelsTobias Kiepergass, der Ehegatte | Tobias Kiepergass, der Ehegatte |
 Carsta LöckFrau Kiesewetter | Frau Kiesewetter |
 Hubert von MeyerinckAuktionator | Auktionator |
 Lotte RauschWirtin | Wirtin |
| GGaston BrieseWirt | Wirt |
 Hans Meyer-HannoGendarm | Gendarm |
| AAlfred StratmannEin Bauer | Ein Bauer |
 Eduard WenckApotheker | Apotheker |
 Ewald WenckBürgermeister | Bürgermeister |