Joseph Delaney books in order
21 books in the catalogue, about 144 hours of reading in all; the shortest takes 4 hours and the longest 10 hours.
1 series and 12 standalone books in the catalogue.
The Wardstone Chronicles
14 books 1 
The Spook's Apprentice 6.2 h 
The Spook's Mistake 7.2 h 6 
The Spook's Sacrifice 7.3 h 
The Spook's Stories: Witches 5.0 h 
The Spook's Destiny 5.8 h 9 
I Am Grimalkin 5.8 h 10 
The Spook's Blood 5.7 h 11 
Slither's Tale 6.2 h 12 
Alice 8.2 h
The Spook's Apprentice 6.2 h 2 The Spook's Curse length not known
3 The Spook's Secret length not known
4 The Spook's Battle length not known
5 The Spook's Mistake 7.2 h 6 The Spook's Sacrifice 7.3 h The Spook's Stories: Witches 5.0 h 7 The Spook's Nightmare length not known
8 The Spook's Destiny 5.8 h 9 I Am Grimalkin 5.8 h 10 The Spook's Blood 5.7 h 11 Slither's Tale 6.2 h 12 Alice 8.2 h 13 The Spook's Revenge length not known
Standalone books
Attack of the Fiend 9.8 h 
Night of the Soul Stealer 9.0 h 
The Spook's Curse 8.4 h 
Wrath of the Bloodeye 10.0 h 
Clash of the Demons 7.5 h 
A Coven of Witches 4.1 h 
Rise of the Huntress 8.0 h 
The Spook's Bestiary 4.1 h 
Grimalkin, the Witch Assassin 6.1 h 
A New Darkness 6.5 h 
The Dark Army 7.2 h 
Spook's Dark Assassin 5.9 h