Join four youngsters as they embark on an amazing seaside adventure. It all starts when twelve-year-old Jack has a chance meeting on Abersoch beach with a headstrong girl of the same age called Lou. She becomes friends with Jack, his brother David and sister Emily. They join her in hot pursuit of smugglers targeting the remote coastline of Wales's Lleyn Peninsula. The children undertake a thrilling and at times dangerous quest to uncover illegal activities. Their journey takes them to a woodland den, an uninhabited island, a deserted cove and a disused manganese mine. This is the first book in the Lou Elliott mystery adventure series.