Dusk is an important turning point in the series. It is part of The Concourse to Victory, the third volume of the Course Books series. It is fitting that this story would find itself in the same book as Introductions; whereas Introductions displayed the meeting of the Eighth Power, Dusk concerns the breaking of the group. This is graduation from Gudersnipe School, when the team goes their separate ways.
Chronologically, this is the first introduction of Metanie Bur'I, though she made appearances in Point of the Spear from The Road to War and The Reunion of the Eighth Power in The Path to Ascension. This also shows the somewhat indifferent reunion with Lily McConery, a recurring character introduced in Daylight.