Christopher's homecoming takes a sinister turn when a murderous
conspiracy is uncovered in this fifth novel of the award-winning
Blackthorn Key series.
Christopher, Tom, and Sally are back in London at last. Everyone is
relieved at their return--the plague has ended, and the king, pleased
with their service, offers a surprising reward. But trouble has followed
them home...
First, an old friend is ambushed and left for dead. Then an anonymous
letter arrives at Blackthorn--a mysterious warning hidden inside a
riddle and secret code. As Christopher and his friends begin to
investigate, they soon discover they've stumbled upon a plot to kill the
king...and anyone else who dares stand in the traitors' way.