Time Detectives is a spin-off of the Horrible series, quite similar to The Spark Files

The Spark Files

The Spark Files is one of the many spin-offs of Horrible Histories. It focuses on scientific experiments being portrayed through a humorous story, or a fictional tale.The list of the series is:#Space Race -...

, though focusing on historical aspects, not scientific. The purpose of the series is to explore historical mysteries in a new, exciting manner.Terry Deary

Terry Deary

Terry Deary is a children's author now living in Burnhope, County Durham, England.A former actor, theatre-director and drama teacher, Deary says he began writing when he was 29...

, the author, has also recently announced that he will be writing a similar series called "Wild Words", focusing on the aspects of the English Language. The Time Detectives was fully released in 2000.

The books in the series are:

• The Witch of Nightmare Avenue
• The Princes of Terror Tower
• The Pirates of the Dark Park
• King Arthur's Bones