Major publishers have announced they will release Call Me Evie in North America and Britain.
Former Herald journalist Kelly Dennett's The Short Life And Mysterious Death of Jane Furlong won the prize for best non-fiction.
Dame Ngaio Marsh, who died in 1982, made the shortlist for the annual prize which is named after her. Marsh's unfinished Inspector Alleyn mystery set during World War II, Money in the Morgue, was completed by Stella Duffy and was a finalist for best novel.
Other finalists included Liam McIlvanney for The Quaker, Pomare for Call Me Evie, and Jen Shieff for The Vanishing Act.
Andrea Jacka's One For Another and Kelly Lyndon's Crystal Reign were in the finals for the best first novel. Finalists for the best non-fiction prize included Scott Bainbridge for The Great New Zealand Robbery, Herald crime reporter Anna Leask for Behind Bars, and Cynric Temple-Camp for The Cause Of Death.