Robertson Davies books in order
6 books in the catalogue, about 47 hours of reading in all; the shortest takes 5 hours and the longest 16 hours.
2 series and 2 standalone books in the catalogue.
The Deptford Trilogy
3 books
The Cornish Trilogy
2 books The Rebel Angels length not known
What's Bred in the Bone 8.0 h 
