Tasked by the queen to close the ‘Septimus Wave’ case once and for
all, Captain Blake is facing a daunting task, for many questions
remain unanswered. Where did the spaceship buried beneath London come
from? What became of Lady Rowana and Professor Evangely? Meanwhile,
Mortimer is trying to pull Olrik out of the catatonic state the
villain has been in since his encounter with the ship’s occupant. Has
the threat to the nation truly been vanquished?