It's a dangerous life being the younger brother of the world's worst private detective - but Nick Diamond has survived ... so far. However, these four mysteries are set to test his survival instincts to the full: a school reunion on a remote Scottish island, a dream holiday to Paris, an investigation into the whereabouts of a man in a blurry photo and the high profile visit of a world famous singer. What connects them? Murder! And if the Diamond Brothers don't play their cards right, they too could end up dead...