Ngaio Marsh books in order
33 books in the catalogue, about 162 hours of reading in all; the shortest takes 4 hours and the longest 7 hours.
1 series and 18 standalone books in the catalogue.
Roderick Alleyn
32 books
A Man Lay Dead 3.5 h 
Enter a Murderer 3.5 h 
The Nursing Home Murder 3.6 h Death in Ecstasy length not known
5 
Vintage Murder 4.7 h Artists in Crime length not known
Death in a White Tie length not known
Overture to Death 5.9 h Death at the Bar length not known
Surfeit of Lampreys length not known
11 
Death and the Dancing Footman 5.9 h 
Colour Scheme 5.6 h 13 
Died in the Wool 4.7 h 14 
Final Curtain 5.3 h Swing Brother Swing length not known
Opening Night length not known
Spinsters in Jeopardy length not known
Scales of Justice 4.7 h Off With His Head length not known
Singing in the Shrouds length not known
False Scent length not known
Hand in Glove 4.6 h 
Dead Water 4.4 h 
Death at the Dolphin 5.3 h Clutch of Constables length not known
When in Rome length not known
Tied Up in Tinsel 4.8 h Black As He's Painted length not known
Last Ditch length not known
Grave Mistake length not known
Photo Finish 4.7 h Light Thickens length not known
Standalone books
Death in Ecstasy 4.7 h 
Artists in Crime 5.5 h 
Death in a White Tie 6.4 h 
Death at the Bar 5.0 h 
Death of a Peer 5.6 h 
A Wreath For Rivera 5.2 h 
Opening Night 4.3 h 
Spinsters in Jeopardy 4.7 h 
Death Of A Fool 5.3 h 
Singing in the Shrouds 4.4 h 
False Scent 4.7 h 
Clutch of Constables 4.5 h 
When in Rome 4.7 h 
Black As He's Painted 4.7 h 
Last Ditch 5.1 h 
Grave Mistake 4.7 h 
Light Thickens 4.6 h 
Country House Murders 6.8 h