Nocturnal excursions enable Rakvir Stagarnik to gain useful information about who killed the Kerkrander and how the two Thanians were involved Tracking some of these people leads to an empty house in a wealthy quarter of Ralchis and the realisation that a huge conspiracy is taking place Through the intervention of a corrupt merchant and an old friend Rakvir and Arhilka are able to put pressure on a highplaced merchant adventurer while continuing the pretence of negotiating the sale of their quotghanquot But before he confesses he is captured and murdered by people who remain largely invisible quotOut of sight 2 Invisible peoplequot is the second of three volumes where Rakvir and Arhilka Stagarnik investigate murder and corruption in the City of Ralchis It is part of the series which include quotThrough Firequot and quotBy Waterquot set in a distant planet not too dissimilar from our own written by Richard Hernaman Allen a former Commissioner of Customs amp Excise