![Grk Operation Tortoise](http://www.beyond-books.co.uk/cdn/shop/products/grktort_{width}x.jpg?v=1610711549)
When Tim discovers a man badly hurt on a beach, his sun-kissed relaxing holiday in the Seychelles takes on a more dangerous twist. He and Grk are the only ones, it seems, who want to know what happened. They find themselves speeding towards a well-guarded private island, and single-handedly foiling a dastardly plot threatening the local endangered giant tortoises.