HarperCollins, London, 2000, 1^st pr thus.  ISBN 0-00-651081-7.  MMPB 192 pages.  Unread copy with a touch of cover wear; pages lightly tanned.  ‘Everything in Egypt depends on the waters of the Nile.  So when an attempt is made to blow up a key regulator in the Cairo Barrage, Gareth Owen – The Mamur Zapt, Chief of Cairo’s Secret Police – is hurriedly called in.  What exactly is a regulator, though?  Owen doesn’t know.  But then, there are many things he doesn’t know.  Who is the Lizard Man, for example, and why does he appear to have a grudge against Egypt’s irrigation system?’ (from rear wrap)