Two Queens - one realm. One Queen must die! In Jacob Bell's most perilous role, he is recruited by the Queen's spy catcher, Walsingham, to infiltrate the Duke of Guises's plot to assassinate Queen Elizabeth I and put the Scots Queen, Mary Stuart on the throne. An old enemy, Jed Sutton, (The Crystal Ship), becomes involved and when Mary Stuart is arrested, he kidnaps Jacob’s wife and son. He forces Jacob to help him rescue the Scots Queen, a seemingly impossible task. Jacob takes a desperate gamble that leads to a violent struggle, as the book reaches its dangerous climax,. At stake, the lives of his wife and son, as well as his own.