Now you can read about the Upside Down.

Netflix has signed a deal to release a series of books based on Stranger Things.

The first two titles, due to be released this autumn, will be a behind-the-scenes companion book and a hardcover gift book for young readers.

They will be followed next spring by a Stranger Things prequel novel, written by author Gwenda Bond, about Eleven’s mother and the MKUltra programme. More books will be released later next year.

Stranger Things: World Turned Upside Down: The Official Behind-The-Scenes Companion will arrive this autumn and offer “advice, wisdom, and warnings from the Stranger Things world.”

The books are set to be released in the US, UK and British Commonwealth.