Tennyson, the false prophet of the Outsider cult, has escaped and Halt is determined to stop him before he crosses the border into Araluen, but Genovesan assassins put Will and Halt's extraordinary archery skills to the test.

Halt, Will, and Horace set out for Hibernia, where a quasi-religious group, the Outsiders, is sowing confusion and sedition, and they find that secrets from Halt's past may hold the key to restoring order before the last kingdom is undermined.

"In the seventh installment in the Strike series, Cormoran and Robin must rescue a man ensnared in the trap of a dangerous cult. Private Detective Cormoran Strike is contacted by a worried father whose son, Will, has gone to join a religious cult in the depths of the Norfolk countryside. The Universal Humanitarian Church is, on the surface, a peaceable organization that campaigns for a better world. Yet Strike discovers that beneath the surface there...

"One brilliant June day when Mia Jacob can no longer see a way to survive, the power of words saves her. The Scarlet Letter was written almost two hundred years earlier, but it seems to tell the story of Mia's mother, Ivy, and their life inside the Community -- an oppressive cult in western Massachusetts where contact with the outside world is forbidden, and books are considered evil. But how could this be? How could Nathaniel Hawthorne have so perfectly...

An introduction to some of history's most noteworthy and notorious secret societies and underground cults includes profiles of Opus Dei, the Freemasons, and the Skull and Bones.