S1·E30 The Twins

Merel and Roos are identical twins. They look exactly alike. But there is one big difference. Merel is seriously ill and Roos is not. Merel is getting chemotherapy and her hair is starting to fall out. She wants to keep her illness a secret at school, because she doesn't want to be seen as pathetic. But Roos makes a slip of the tongue, much to Merel's anger.