Titles in this set:
Horrible Histories Collection
Horrible Science Collection
Murderous Maths Collection

Horrible Histories Collection 20 Books Set
Savage Stone Age, Awesome Egyptians, Groovy Greeks, Rotten Romans, Cut-Throat Celts, Smashing Saxons, Vicious Vikings, Stormin Normans , Angry Aztecs, Incredible Incas, Measly Middle Age, Terrible Tudors, Slimy Stuarts, Gorgeous Georgians, Vile Victorians, Villinous Victorians, Barmy British Empire, Frighteul First World War, Woeful Second World War, Bilitzed Brits

Horrible Science Collection 20 Books Set
Sounds Dreadful, Space,Stars and Slimy Aliens, Terrible Truth About Time, Viclous Veg, Painful Poison, Microscoplc Monsters, Killer Energy, Frightening Light, Fight for Flight, Angry Animals, Evolove or Die, Disgusting Digestion, Deadly Diseases, Chemical Chaos, Bulging Brains, Blood, Bones and Body Bits, Fatal Forces, Shocking Electricity, Nasty Nature, Ugly Bugs

Murderous Maths Collection 10 Books set
The Phantom X, Desperate Measures, The Perfect Sausage and Other Fundamental Formulas, Guaranteed to Bend your Brain, Do you Feel Lucky, Awesome Arithmetricks, Savage Shapes, Guaranteed to Mash your Mind, The Key to the Universe, Easy Questions Evil Answers