Mr and Mrs Sawdust are hard at work decorating the house and garden for Halloween, while Karen is making her costume. After Noel explains to the gang what Halloween is, Olga worries that Karen will be going dressed as a cat and that lots of other people are doing the same thing. Olga can’t stop thinking about all the Halloween cats that might appear and wonders why no-one has dressed a guinea pig! To Olga’s surprise and delight, when Karen finally comes out to show off her costume, it’s a very recognisable look – she is dressed as Olga! Show less