Book Three continues with the story of Mac Smith and Carice Offstrop, who have set up an Inquiry Agency together in Auckland, New Zealand. Mac and his wife Deborah, who is pregnant with her first child, have been married for just over a year and Carice is engaged to Desmond who manages a hotel in Auckland. Their office is located above The Moray Restaurant which is situated in the business centre of Auckland and is owned and managed by Stephen Newn, Desmonds brother. Living in an attic bedroom above the office, with his dog Holborn, is Professor Tymn, who lectures at Auckland University and often assists them with their cases. Mac and Deborah have become friends with a couple named Caspar and Phoebe Primrose who own a small farm north of Auckland and who have involved them in their search for a lost gold mine in South Island. Whilst solving their unusual cases, Mac has been re-united with an old friend from Military Intelligence, who continually attempts to lure him back into the world of espionage. This book does not contain bad language, gratuitous violence or sex scenes.