From The Clerical Detectives by Philip Grosset
With Murder in Mind tells how 28-year-old Pamela Martin answers an advert that appeared in an English paper: "A New Zealand family wish to employ a well-spoken young English woman as companion to two children, for a period of three months. Driving licence desirable. Good speech essential. Fare to and from Auckland will be paid. Salary negotiable ..." After a bizarre interview in London during which she is judged only by her voice, and not given any further information about salary or anything else, she is told she has got the job, and so sets off to New Zealand!