A pirate captain worries about an early bedtime and the four King Georges form a boyband.

A Stone Age doctor tries to help a modern patient and a Pharaoh invents the pyramid.

A Roman emperor finds a nasty alternative to candles, and an Egyptian tries to save money.

The Tudors sing their family history, Bob explains the complete history of Rome in two minutes, and a mad Victorian gentleman eats King Louis XIV's mummified heart.

A priest makes a piano from live pigs, Emperor Caligula declares war on the sea, and there are some disgusting beauty tips from Ancient Egypt.

An evil Greek god appears on a daytime chat show, a rich Georgian swaps his wife with a peasant, and we meet some weird medieval monsters.

There is a terrible smell in the Houses of Parliament, Cinderella struggles with the Blitz, and Helen of Troy reveals her complicated love life.

A lazy aristocrat invents the sandwich, the Romans host their own revolting cookery show and William Shakespeare is haunted by the ghost of King Richard III.

History is filled with tales of great minds coming together, and collaborating, to achieve incredible things. It’s also full of idiots working together to create an unholy mess, and people forming partnerships for decidedly sinister reasons - welcome to Horrible Histories’ Chaotic Collabs!

Comedian and space nerd Dara O Briain joins Rattus as guest host for a special show that marks the anniversary of the 1969 moon landings.

Alex Scott joins Rattus for a sport-themed special. Mary Queen of Scots goes grief-golfing, the H2 Freestylers take on a whole village, and the sports-mad Henry VIII sings Get Sweaty.