There's concern in Portwenn that local radio presenter Caroline Bosman has a drink problem. She's been heard slurring her words during her broadcasts, and she's been seen driving erratically. Her marriage is on the rocks because of her strange behavior. PC Mylow has romance on his mind. He's been bowled over by the pretty, blonde newcomer to Portwenn, Julie. He offers to give her driving lessons, and is over the moon when she accepts. But his little bubble of happiness bursts when she decides to enroll at a proper driving school. Meanwhile, Martin has an odorous problem with one of his patients. Vernon Cooke stinks so much nobody can bear to be in the same room. Martin has the unpleasant task of trying to discover the cause.