Desert Island DiscsDame Ngaio MarshBBC Radio 4 Duration: 30 minutesFirst broadcast: Mon 2nd Sep 1968, 12:25 on BBC Home Service BasicRoy Plomley's castaway is crime writer Dame Ngaio Marsh. Show more ContributorsPresenter:Roy PlomleyInterviewed Guest:Dame Ngaio MarshGenresFactualArts, Culture & the MediaFactualLife StoriesBrandDesert Island Discs Source: BBC Online