The Fall is All There Is (Four of Mercies Book 1)

You never want to ruin a really good dramatic exit. When you flee home on a cyborg horse the exact second you turn eighteen, you don't really expect to go back to the place you fled from, you know? But sometimes your old life hits you from behind.
 
Sometimes you spend years away from home, killing dangerous people who had the bad luck to get infected by a lungful of ghostfog, only to find out that your dad, the king, is dead, and now your siblings are ordering you back home for a high stakes family reunion. 
 
But when you've got four heirs who are all the same age, the line of succession tends to get a wee bit murky. So in order to regain your independence, you've got to navigate a deadly web of intrigue, where every sibling wants your allegiance, and any decision might tear your country—and your family—apart.