Robert Louis Stevenson 
Black Arrow 

Caught in the midst of England’s War of the Roses, young Dick Shelton’s loyalties are torn between a guardian who betrays him and the leader of the secret fellowship, "The Black Arrow". the Houses of York and Lancaster are locked in a brutal struggle for England’s crown and the fate of the kingdom is at stake. Shelton finds himself entangled in the conspiracy. In order to survive he must distinguish friend from foe and confront the tests of war, shipwreck, murder and forbidden love.