When the Diamond Brothers receive an invitation to a school reunion on a remote Scottish island, things seem to be looking up. But Nick's got a bad feeling, and it's not indigestion. And when he meets their fellow guests, the feeling only gets worse especially when they start dying in ever more bizarre ways!

Anthony Horowitz (born 5 April 1955), is an English author and screenwriter. He has written many children's novels, including The Power of Five, Alex Rider and The Diamond Brothers series and has written over fifty books. He has also written extensively for television, adapting many of Agatha Christie's Hercule Poirot novels for ITV series. He is the creator and writer of the ITV series Foyle's War and the series Midsomer Murders.