Shortly after the events on Mars, the Conjoiners reach the ice world Diadem and find an abandoned human colony and its dead settlers, all showing signs of the same creeping insanity. When Nevil Clavain revives a survivor who claims to be someone he is not, uncovering the truth means understanding just how far one desperate man goes to protect what he believes the ice is becoming.

Summary by Loreful, from public sources

Placement