Philip Caveney books in order
2 books in the catalogue, about 13 hours of reading in all; the shortest takes 6 hours and the longest 7 hours.
1 series in the catalogue.
Sebastian Darke
4 books
Sebastian Darke: Prince of Fools 6.2 h 
Sebastian Darke: Prince of Pirates 7.2 h A Buffalope's Tale length not known
Sebastian Darke: Prince of Explorers length not known