Prince Harry to release an "eyebrow raising" memoir - Heather du Plessis-Allan Drive

A prediction is Prince Harry's memoir will be very revealing.

Harry is releasing a tell-all called Spare which he's promised has raw unflinching honesty.

The 400 page book will be released in January next year in 16 languages and will have an audio edition read by Harry himself.

Royal Correspondent Juliet Rieden says that it could have the palace worried.

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