The summer break is over and the twins returned to Lindenhof. That has now changed a lot. Because Mrs Theobald had to travel, Mademoiselle Bertoux has taken the lead.
| Actor | Role |
|---|---|
| JJana MünsterMarianne 'Nanni' Sullivan | Marianne 'Nanni' Sullivan |
| SSophia MünsterHanna 'Hanni' Sullivan | Hanna 'Hanni' Sullivan |
 Heino FerchGeorg Sullivan | Georg Sullivan |
 Suzanne von BorsodyFrau Mägerlein | Frau Mägerlein |
 Anja KlingJulie Sullivan | Julie Sullivan |
 Katharina ThalbachMademoiselle Bertoux | Mademoiselle Bertoux |
 Hannelore ElsnerDirektorin Theobald | Direktorin Theobald |
 Barbara SchönebergerErikas Mutter | Erikas Mutter |
 Sven GielnikPhilippe | Philippe |
 Aleen Jana KötterErika | Erika |
 Carolin KebekusFrau Goethe | Frau Goethe |
 Martin OntropRoland | Roland |
 Luisa SpanielLilly | Lilly |
 Nele GuderianDaniela | Daniela |
 Joyce Abou-ZeidCosi | Cosi |
 Monika ManzMutter Hubertus | Mutter Hubertus |
| NNasrollah SaghebFürst von Saghaba | Fürst von Saghaba |
 Heiko PinkowskiHühner-Hans | Hühner-Hans |
 LaFeeHerself | Herself |