When Mary Wilkins and her mother, Linda, decide to rent a house near Bath, it seems like the solution to a problem. However, when Linda tries to get in touch with the owners, who are said to have retired to Spain, she runs up against the agents, Tanner & Crisp. Not daunted, Linda is determined to find out the truth unaware of the risks. Meanwhile, Mary is totally occupied with work where staff are reacting strongly against her reforms and the Chairman, Mr Knight, is furious with her about falling profits. She is soon made aware that her own life is in danger. Then it all gets really difficult for both of them.