Mike receives orders to provide a refuge for a dangerous police informant and struggles to keep it under wraps, especially when Nokes and Bellamy become suspicious about his strange behaviour. As Jackie suffers a terrifying ordeal at the hands of her new houseguest, Mike becomes mixed up in a case of police corruption. Meanwhile, David is devastated when Greengrass makes an abrupt departure from Aidensfield to join his sister in the West Indies when she comes into a large amount of money. Bernie is horrified when his entrepreneurial brother Vernon turns up in the village. Vernon is quick to worm his way into Greengrass' old cottage when David runs into trouble whilst calling in on an old debt of his former mentor, and Bernie is riled when his brother plans to cash in on his share of Scripps garage.