Blood Fever Young Bond Series, Book 2.

Following his adventures in the Scottish Highlands, James Bond is back at Eton, where he has joined the risk-taking Danger Society. Summer vacation is on the horizon and James is looking forward to the school trip to the beautiful Italian island of Sardinia, and the opportunity to spend some time with his reclusive cousin Victor. But all is not as it appears. James soon discovers that the seemingly peaceful island harbors some strange secrets....