Terry Deary books in order
12 books in the catalogue, about 31 hours of reading in all; the shortest takes 2 hours and the longest 4 hours.
12 standalone books in the catalogue.
Standalone books
The Awesome Egyptians 2.4 h 
The Rotten Romans 2.4 h 
Groovy Greeks 2.4 h 
The Measly Middle Ages 2.4 h 
True Horror Stories 3.0 h 
The Angry Aztecs 2.4 h 
The Frightful First World War 3.1 h 
The Woeful Second World War 2.4 h 
The Barmy British Empire 3.5 h 
The Smashing Saxons 2.6 h 
Vile Victorians 2.6 h 
Horrible Histories 2.5 h