Nightstorm and the Grand Slam

It's the final Pony Club Secrets adventure for Issie and Storm – can they become the youngest team to win the triple Grand Slam ever?

Don't miss the explosive finale to the bestselling pony series!

Issie exceeded her wildest riding dreams winning at the Lexington Kentucky four-star trials, but could there be even bigger prizes on the horizon?

Her foal, Nightstorm, has grown up to be an incredible sporthorse – powerful, fast and eager to win, so it's time to put their riding skills to the ultimate test and see if they can complete the hat-trick and win at Badminton and Burghley too!

About the author

Stacy Gregg is the author of successful pony adventure series Pony Club Secrets and Pony Club Rivals. Formerly the editor of fashion website Runwayreporter.com, Stacy writes exclusively for HarperCollins.

Her own ponies and experiences at her local pony club provided the inspiration for the Pony Club Secrets and her later years at boarding school were a catalyst for Pony Club Rivals.