
In 1937 Marsh went to England for a period. Throughout the 1930s Marsh painted occasionally, wrote plays for local repertory societies in New Zealand, and published detective novels. Marsh's first novel, A MAN LAY DEAD (1934), which she wrote in London in 1931-32, introduced the detective Inspector Roderick Alleyn: a combination of Sayers's Lord Peter Wimsey and a realistically depicted police official at work. She did not always see herself as a writer, but first planned a career as a painter.

Over a fifty-year span, from 1932 to 1982, Marsh wrote thirty-two classic English detective novels, which gained international acclaim. Sayers, Ngaio Marsh alone survived to publish in the 1980s. Of all the "Great Ladies" of the English mystery's golden age, including Margery Allingham, Agatha Christie, and Dorothy L.

There is some uncertainty over her birth date as her father neglected to register her birth until 1900, but she was born in the city of Christchurch, New Zealand.

Dame Ngaio Marsh, born Edith Ngaio Marsh, was a New Zealand crime writer and theatre director.
