Caller series book one: The call of Duty

After the deaths of both his sister and brother-in-law, Milo Tedious Marlin becomes the guardian of his three nieces. That is until his brother-in-law's brother comes to see the girls.
It seems that his nieces are part of a plan to get the thrown, can Milo save his nieces from the greed of others and curse that comes from the North.
Find out in the First in the Caller series: The Call of Duty.