When an criminal investigation needs a special touch, there's still only one solution. Call on the elite team attached to London's Metropolitan Police. The Special Duty Investigation Unit. The SDIU. It's 1977. Times and people have changed & in the SDIU, five become six. When Vicki Simmonds joins the SDIU she quicly learns to expect the unexpected. A British scientist uncovers a project so secret, no one wants him to reveal all. When all sides take an interest, he returns to the UK where the SDIU is assigned to keep him safe. As international events appear to bring the world to the edge of war, the team is guarding the one man at the centre of it all. Or are they?Just who is who and is anyone actually who they say they are? One Plus Five Special Edition is the expanded version of the second SDIU adventure by Richard Tyjas.