Yorkshire writer Kate finds out her biological clock is ticking down the same day that her husband leaves her. To get over the financial crisis this creates she takes in car-dealer Dave. He's homeless as Kate's husband has moved in with his wife. This leaves the problem of how to get promptly pregnant. Surely not with increasingly interesting Dave. They can't even agree on a baby's name - he thinks Fanny is silly and she finds Elvis, well, inconceivable.
During a visit to childhood friend Edith, retired housewife Hetty Wainthropp discovers that Edith's husband, Frank, has a son by a previous marriage. Hetty decides to turn amateur detective to trace him. When this gives her a taste for detection, Hetty decides to set up a private detective agency.
