Book Four of the Ammonite Galaxy series: Six, Diva and Grace are back laughing together in the sun on Xiantha. Grace seems to have come to terms with the wounds from her fall, and Diva, still blissfully unaware of what a recipe for disaster it might be, is determined to take Six to Coriolis. Then Ledin arrives for a visit, and the magnificent black canth linked to the orthogel entity is discovered to be desperately ill. But Arcan is well, so how can that be possible? And why are the other canths excited, instead of worried? The answers can only be found on Pictoria, but once there, they find the visitor missing, pulled across the galaxy by the force of the Dessite minds. To rescue him will mean risking their own lives on the Dessite homeworld. —But have the Dessites already learned enough to conquer Pictoria and the binary system?