Their friend Father Higgins is in trouble, and it is up to Johnny and Professor Childermass to save him from the forces of evil. In this, the eighth Johnny Dixon mystery, Johnny and the professor hear word of Father Higgins being haunted, and when he disappears, clues lead them...
When Father Higgins disappears, Johnny Dixon and Professor Childermass discover disturbing clues which lead them to England and an encounter with a long-dead knight.