The case of the marmalade cat

Miss Parsnip has asked the O'Brien Detective Agency to find her missing cat, and Clarice O'Brien is eager to take the case. But it looks like the case of the marmalade cat isn't the only mystery around. Clarice's best friend Sadie thinks Miss Parsnip looks and acts an awful lot like a witch ... and their new partner, Brick, can walk on fences, climb on roofs, and talk in cat language.