"The Curse of Kirrin Island" is an action-packed adventure set in the 1940s on Kirrin Island. George and her cousins, along with their loyal dog Timmy, set out to find treasure and uncover the truth behind a local curse. As they navigate the dangers of the island and its secrets, they must also deal with family dynamics and the mysterious Knights Templar. With a stolen treasure, a body washing up on the beach, and a quest for peace, the Five (plus Timmy) face a thrilling series of events against the backdrop of the Dorset coast.