England's Forgotten Queen: The Life and Death of Lady Jane Grey

On his deathbed King Edward cuts his sister Mary out of the line of succession and leaves the throne to his cousin Jane. It forms the basis of a constitutional crisis that brought the country to the edge of civil war.

Mary Tudor is determined to gain the throne she thinks is rightfully hers, both Mary and Jane are raising forces.

The balance of power shifts as people change sides. Mary route to the throne is clear.